Print Page - [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-02-12 10:45:22

If you want the USB audio enabled on any Android 4.0 device via official firmware/kernel, please vote (aka star) here:
http://code.google.com/p/android/issues/detail?id=24614 (http://code.google.com/p/android/issues/detail?id=24614)

Star: Vote by clicking on the star

According to Android 3.1 specifications, Android 4.0 devices could support the USB audio feature, i.e. Android 4.0 devices and USB_CLASS_AUDIO compliant devices like standard USB DAC could interoperate:
http://developer.android.com/guide/topics/usb/index.html (http://developer.android.com/guide/topics/usb/index.html)
http://developer.android.com/reference/and...bConstants.html (http://developer.android.com/reference/android/hardware/usb/UsbConstants.html)

USB_CLASS_AUDIO compliant devices like standard USB DAC don’t need a special USB device driver. Instead, they use an operating system standard driver.
The Android standard USB audio driver is the generic USB Audio Driver for ALSA (Advanced Linux Sound Architecture).
And the latest Android 4.0 includes “card.c“, the USB Audio Driver for ALSA which should be compliant with USB audio class 2 devices allowing for 24 bits / 192 kHz.
https://bitbucket.org/paulobrien/android_ke...ound/usb/card.c (https://bitbucket.org/paulobrien/android_kernel_galaxynexus/src/bc4f9b72a51d/sound/usb/card.c)

(http://farm6.static.flickr.com/5253/5534201226_7e7d2d90eb_b.jpg)

Android relies on Linux version 2.6 for core system services such as security, memory management, process management, network stack, and driver model. The Linux kernel also acts as an abstraction layer between the hardware and the rest of the software stack.
Thus Android handles all the things that Linux is really good at such as a vast array of device drivers, which take the pain out of interfacing to peripheral hardware.

The official Android with USB audio enabled should be used by most people, who don’t want to mod their device.

Android kernel modders have already enabled the USB audio feature on Nook Color tablets which are powered by Android 2.3 Gingerbread.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: ExUser on 2012-02-12 18:40:41

All it takes is a custom kernel to enable USB audio. I have a Motorola Atrix. I can, in theory, do this, but I haven't bothered yet. It's not well-supported in software either.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: saratoga on 2012-02-12 20:30:16

I think we should just ignore the second half of this post because I'd still really like to see this enabled by default on all Android devices in the next release. I've gone and starred that task, and encourage anyone else who'd be interested in using Android (or rockbox on android ) as a media platform to do the same. Its a really useful feature and its silly that Google overlooked this in Android 4.0. It should be available to everyone, not just people who feel like hacking the linux kernel on Android.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: itisljar on 2012-02-12 20:44:37

What is the point of that? I don't get it, what would it do?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: saratoga on 2012-02-12 20:51:09

It would let you plug any Android phone into the USB port of any USB audio compliant DAC, car stereo, receiver, etc. and play audio over the speakers while charging the device without need for an AUX jack and cable.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: itisljar on 2012-02-12 22:04:03

Oh, I thought it already can do that. My mistake.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: saratoga on 2012-02-13 00:38:11

Quote from: hlloyge on 2012-02-12 22:04:03

Oh, I thought it already can do that. My mistake.

Yeah, its kind of ridiculous, but right now almost no Android devices can do this.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: andy o on 2012-02-13 01:28:53

First post is kind of spammy (googled for specific phrases, many forum posts come up). So probably the OP isn't coming back.

Quote from: saratoga on 2012-02-12 20:51:09

It would let you plug any Android phone into the USB port of any USB audio compliant DAC, car stereo, receiver, etc. and play audio over the speakers while charging the device without need for an AUX jack and cable.

Does USB power go both ways? Cause in this case, shouldn't the Android device be powering the DAC/speakers?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: saratoga on 2012-02-13 01:41:31

Quote from: andy o on 2012-02-13 01:28:53

Does USB power go both ways? Cause in this case, shouldn't the Android device be powering the DAC/speakers?

I doubt the phone can provide any power. It probably negotiates such that the external device is powering the bus. IIRC this wasn't permitted in the original USB spec, but was added a few years back in one of the USB OTG or USB charger specifications.

That said, I'm not USB expert, so please don't quote me as an authority.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: saratoga on 2012-02-13 01:43:32

Actually, google turns up some people using USB > SD adapters with Android phones, so perhaps they can provide the minimum level (IIRC 100 mA?).

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: andy o on 2012-02-13 02:15:46

I think iPads can power USB speakers and headphones.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: saratoga on 2012-02-13 02:25:25

Quote from: andy o on 2012-02-13 02:15:46

I think iPads can power USB speakers and headphones.

By default an ipod accessory gets 5mA at 3.3v, but it can request that the ipod provide up to 100 mA at 3.3v provided it authenticates with the ipod's encryption chip.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: soulsearchingsun on 2012-02-13 07:20:46

What I'd like to know:

Is it necessary for the phone to support USB host to achieve this?
AFAIK USB_CLASS_AUDIO as source is possible with both host and device configurations.

Does anyone know how common USB DAC's behave in this respect?
The request remains rather unspecific in terms of technical details.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-02-13 11:22:29

Quote from: Canar on 2012-02-12 18:40:41

You are new here. Please re-read our Terms of Service, paying attention to point 8. You have violated it repeatedly in your first post.

Please read again, I use conditional sentences.

Firstly, I want to gather a maximum of votes to request Google and therefore Android device manufacturers to support and enable USB audio.

Secondly, as Android modders are trying to enable the USB audio on the Galaxy Nexus smartphone, I take this opportunity to push them to explore the OS audio tweaked theory mentioned on Assylum.
The second part of my first post is aimed to collect these “tweaked” parameters.
It won’t harm to try and test.

Anyway, I am willing to remove the second part of my first post.
How can I remove it?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-02-13 11:39:19

Quote from: saratoga on 2012-02-12 20:30:16

I think we should just ignore the second half of this post because I'd still really like to see this enabled by default on all Android devices in the next release. I've gone and starred that task, and encourage anyone else who'd be interested in using Android (or rockbox on android ) as a media platform to do the same. Its a really useful feature and its silly that Google overlooked this in Android 4.0. It should be available to everyone, not just people who feel like hacking the linux kernel on Android.

Thanks!

The USB audio request is currently ranked 50, and there are 17542 requests.
In fact, it is ranked in top 10 among one-year-old requests.

According to Android specifications, USB audio is included in Android 3.1 or newer platforms.
http://developer.android.com/guide/topics/usb/index.html (http://developer.android.com/guide/topics/usb/index.html)
http://developer.android.com/reference/and...bConstants.html (http://developer.android.com/reference/android/hardware/usb/UsbConstants.html)

It is up to Google for its reference Nexus devices and the other Android device manufacturers to support or enable the USB audio feature on their devices.

Example: The Android 3.2 powered Archos G9 tablet interworks with a USB DAC/amp FiiO E17
http://www.jbmm.fr/2012/01/utiliser-le-dac...vec-son-archos/ (http://www.jbmm.fr/2012/01/utiliser-le-dac-fiio-e17-avec-son-archos/) http://www.archos.com/products/gen9/archos...=us&lang=en (http://www.archos.com/products/gen9/archos_101g9/index.html?country=us&lang=en) http://update.archos.com/9/gen9/changes_fi...ndroid_gen9.htm (http://update.archos.com/9/gen9/changes_firmware_archos_android_gen9.htm)

"Version 3.2.22 - September 2nd, 2011": no USB audio support!
"Initial Honeycomb 3.2 firmware release

Version 3.2.77 - December 6th, 2011
Accessories: external USB audio cards (DAC) support has been added"

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-02-13 13:40:33

Quote from: soulsearchingsun on 2012-02-13 07:20:46

What I'd like to know:

Is it necessary for the phone to support USB host to achieve this?
AFAIK USB_CLASS_AUDIO as source is possible with both host and device configurations.

Does anyone know how common USB DAC's behave in this respect?
The request remains rather unspecific in terms of technical details.

As far as I understand, almost all current USB DAC (which are compliant with PC, Mac and hopefully Android smartphones/tablets with USB audio enabled) act as USB devices, while PC act as USB hosts.

Some rare USB DAC, which are compliant with iPods/iPhones/iPads, are USB hosts, while iPods/iPhones/iPads are USB devices.

(http://a1.sphotos.ak.fbcdn.net/hphotos-ak-snc7/380047_3113194234716_1410232016_33294153_951131866_n.jpg)

(http://cdn.head-fi.org/6/6c/350x196px-LL-6c32295a_378089_3113193714703_1410232016_33294150_1500926361_n.jpeg)

And these USB DAC have to include also an Apple authentication coprocessor.
http://www.xmos.com/products/development-kits/ipod-dock (http://www.xmos.com/products/development-kits/ipod-dock)

However, an iPad can connect to a common USB DAC via an Apple Camera Connection Kit which switches the iPad into USB host mode.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: saratoga on 2012-02-13 16:48:05

Quote from: DanBa on 2012-02-13 11:22:29

Quote from: Canar on 2012-02-12 18:40:41
You are new here. Please re-read our Terms of Service, paying attention to point 8. You have violated it repeatedly in your first post.

Please read again, I use conditional sentences.

Yes, but you're still bullshitting us. The problem isn't the way you said it, its that what you said is ignorant. The reason we have rules against this is to keep people from coming in and throwing out a bunch of nonsense about jitter without understanding what they are saying.

Quote from: DanBa on 2012-02-13 11:22:29

Firstly, I want to gather a maximum of votes to request Google and therefore Android device manufacturers to support and enable USB audio.

The way to do that isn't to imply that the uses of these changes involve a lot of ignorant nonsense. Thats going to convince people that these things aren't useful to informed people.

Which isn't true! Anyone who thinks OS scheduling impacts audio quality is an absolute idiot, and no one who knows what jitter is cares about it on a cell phone. Instead of those imaginary reasons dreamed up by some fool you found on the internet, this stuff is useful because it will allow using Android devices with all kinds of other electronics. Stereos, external DACs, digital headphone amps, etc. Those are real advantages and a great reason for everyone here to support this.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: ExUser on 2012-02-13 17:59:43

Quote from: DanBa on 2012-02-13 11:22:29

Anyway, I am willing to remove the second part of my first post.
How can I remove it?

You don't. Edits are disabled after a period here, due to abuse. I've removed the objectionable content for you, so we can continue to focus on the good parts of your post.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-02-13 20:20:02

Thank you!

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-02-26 08:45:46

Instructions for enabling USB audio on Ainol Novo 7 Advanced Allwinner tablet:
http://www.slatedroid.com/topic/29289-usb-...ivers-and-libs/ (http://www.slatedroid.com/topic/29289-usb-audio-cards-support-drivers-and-libs/)

The official USB audio request is currently ranked 26 of 17969.
http://code.google.com/p/android/issues/de...Summary%20Stars (http://code.google.com/p/android/issues/detail?id=24614&sort=-stars&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars)

In fact, it is ranked in top 3 of less than one-year-old requests.

Vote: Click on the star

Thank you for your votes!

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-05-04 10:44:35

"[64GB + 64GB] #GalaxySIII (http://www.engadget.com/2012/05/03/samsung-galaxy-s-iii-is-official/) includes an USB driver named "snd-usb-audio" [ALSA USB audio driver]. Only testing will tell if it means USB DAC are supported out of the box." [Supercurio]
https://twitter.com/#!/supercurio/statu...218860128780289 (https://twitter.com/#!/supercurio/status/198218860128780289)

The Google issue "Enable USB audio", requesting Google to standardize USB audio on Android smartphones/tablets, is currently ranked 12 of 21,436.
http://code.google.com/p/android/issues/de...Summary%20Stars (http://code.google.com/p/android/issues/detail?id=24614&sort=-stars&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars)

It is ranked in top 2 of less than one-year-old requests.

Vote: Click on the star (it appears after signing in)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-05-18 00:55:59

USB audio is enabled on Texas Instruments Blaze tablet, which is targeted at developers.
http://omappedia.org/wiki/USB_on_Blaze_Tablet_with_ICS (http://omappedia.org/wiki/USB_on_Blaze_Tablet_with_ICS)
http://www.svtronics.com/products/5-blaze-...opment-platform (http://www.svtronics.com/products/5-blaze-tablet-1-development-platform)

"The two HS USB ports are the standard High Speed Host ports and are used for connecting devices like Mouse, Keyboard, USB stick, Camera, USB audio Headset/speakers etc. Also, many customers use the EHCI interface for Modem Connection. If you connect a camera to this port, you can browse the pics on the SD card in camera in the gallery using the PTP daemon in ICS. Also, you can connect USB Headset or speakers and play audio over USB."

"On Blaze if you plug in a USB audio device, all audio will be routed to the device."
http://music.columbia.edu/pipermail/andrau...ril/000614.html (http://music.columbia.edu/pipermail/andraudio/2012-April/000614.html)

The Google issue "Enable USB audio", requesting Google to standardize USB audio on Android smartphones/tablets, is currently ranked 11 of 22,586.
http://code.google.com/p/android/issues/de...Summary%20Stars (http://code.google.com/p/android/issues/detail?id=24614&sort=-stars&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars)

Vote: Click on the star (it appears after signing in)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-05-19 23:16:23

Quote

"[64GB + 64GB] #GalaxySIII (http://www.engadget.com/2012/05/03/samsung-galaxy-s-iii-is-official/) includes an USB driver named "snd-usb-audio" [ALSA USB audio driver]. Only testing will tell if it means USB DAC are supported out of the box." [Supercurio]
https://twitter.com/#!/supercurio/statu...218860128780289 (https://twitter.com/#!/supercurio/status/198218860128780289)

"The Samsung Galaxy S III: AndroidNZ goes hands-on, brings you our thoughts and exclusive details
...and what about those USB audio drivers?

Anyone with a passing familiarity with me will know this was one of the questions I most wanted an answer to. You see Supercurio was able to ascertain that USB audio drivers are present on the S3, only there was no way for him to know whether they work out of the box.

Sadly it seems they do not.
To my great disappointment there was no audio output on connecting my FiiO E17 USB DAC and headphone amplifier. I guess we'll just have to keep waiting for some enterprising developer to make use of those orphaned drivers that are just sitting there on the S3..."
http://www.androidnz.net/2012/05/samsung-g...oidnz-goes.html (http://www.androidnz.net/2012/05/samsung-galaxy-s-iii-androidnz-goes.html)

The Google request "Enable USB Audio" has reached the Top 10 of the Google issue rankings.
http://code.google.com/p/android/issues/de...Summary%20Stars (http://code.google.com/p/android/issues/detail?id=24614&sort=-stars&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars)

Vote: Click on the star (it appears after signing in)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-05-26 17:43:35

Like the overwhelming majority of factory or stock Android devices, with the exception of the Archos G9 tablet and the developer-targeted Texas Instruments Blaze tablet, the factory Linux-powered Logitech Squeezebox Touch does not support USB DACs.

The USB audio is enabled manually on Squeezebox Touch.
http://www.digitalaudioreview.net.au/index...queezebox-touch (http://www.digitalaudioreview.net.au/index.php/news-blog-and-showcase/john-darkos-blog/item/150-how-to-enable-usb-audio-output-on-the-squeezebox-touch)

The latest method uses an applet which allows a custom kernel to be installed and provides menus to select the audio output device.
This custom kernel can support 24-bit/192KHz USB DACs. It can also support asynchronous USB DACs.
http://www.digitalaudioreview.net.au/index...queezebox-touch (http://www.digitalaudioreview.net.au/index.php/news-blog-and-showcase/john-darkos-blog/item/362-enhanced-digital-output-applet-for-squeezebox-touch)
http://forums.slimdevices.com/showthread.p...ity-impressions (http://forums.slimdevices.com/showthread.php?94855-Triode-s-USB-24-192-plug-in-sound-quality-impressions)

The Google request "Enable USB Audio" has reached the Top 9 of the Google issue rankings.
http://code.google.com/p/android/issues/li...amp;sort=-stars (http://code.google.com/p/android/issues/list?cursor=android%3A24614&sort=-stars)

(http://a3.sphotos.ak.fbcdn.net/hphotos-ak-prn1/551131_4131345007849_1410232016_33715844_1048303929_n.jpg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: SoNic67 on 2012-05-27 03:17:43

What, the Archos G9 has the USB audio enabled? Wow, looks like is finally the time to ditch my GTablet...

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-06-02 09:43:11

Apparently, the USB audio feature is enabled on factory Samsung Galaxy S III:
http://forum.xda-developers.com/showpost.p...p;postcount=133 (http://forum.xda-developers.com/showpost.php?p=26757706&postcount=133)

"I got my sgs3 a few hours ago and just plugged it into my Topping tp30 USB DAC/amp and it's playing audio through it to my speakers!!!"

Affordable hi-fi rig:
http://news.cnet.com/8301-13645_3-20058833...l?tag=txt;title (http://news.cnet.com/8301-13645_3-20058833-47.html?tag=txt;title)

music stored on SGS3 > SGS3 player > digital audio stream >> USB cable >> USB DAC/amp Topping TP30 >> speakers

http://www.youtube.com/watch?v=jR6Vc28NEcc...eature=youtu.be (http://www.youtube.com/watch?v=jR6Vc28NEcc&feature=youtu.be)

Keep lobbying for the Android USB audio standardisation (i.e. USB DAC as a standard USB device, like a USB mass storage device, for Android smartphone/tablet).
http://code.google.com/p/android/issues/detail?id=24614&sort=-stars&colspec=ID%20Type%20Status%20Owner%20Summary%20Sta rs://http://code.google.com/p/android/is...mmary%20Sta rs (http://code.google.com/p/android/issues/detail?id=24614&sort=-stars&colspec=ID%20Type%20Status%20Owner%20Summary%20Sta%20%20rs)

Vote: Click on the star (it appears after signing in)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-06-10 00:23:57

Samsung Galaxy S III interworks with USB DAC/amp FiiO E7:
http://www.androidnz.net/2012/06/galaxy-s-...-it-really.html (http://www.androidnz.net/2012/06/galaxy-s-iii-usb-audio-is-it-really.html)

music stored on SGS3 > SGS3 player > digital audio stream >> USB OTG cable >> USB DAC/amp FiiO E7 >> headphones

Samsung Galaxy S III triggers a new era of high dimensions music for the masses with affordable rig:

. affordable (subsidized) smartphone

. affordable common USB DAC/amp compliant with PC or Mac, like FiiO E7 (us$80)
http://www.amazon.com/FiiO-Portable-Headph...4973&sr=8-4 (http://www.amazon.com/FiiO-Portable-Headphone-Amplifier-Black/dp/B003N0XDT4/ref=sr_1_4?ie=UTF8&qid=1339194973&sr=8-4)
http://nwavguy.blogspot.fr/2011/05/fiio-e7-usb-dac-amp.html (http://nwavguy.blogspot.fr/2011/05/fiio-e7-usb-dac-amp.html)
http://www.headfonia.com/fiio-e7-portable-dac/ (http://www.headfonia.com/fiio-e7-portable-dac/)

. affordable headphones, like Digitech Pro Monitor Headphones (us$50), clone of Fischer Audio FA-003, Brainwavz HM5 or Lindy Premium Hi-Fi headphones
http://www.jaycar.us/productView.asp?ID=AA2065 (http://www.jaycar.us/productView.asp?ID=AA2065)
http://www.head-fi.org/products/digitech-p...es/reviews/6900 (http://www.head-fi.org/products/digitech-pro-monitor-headphones/reviews/6900)

(http://a1.sphotos.ak.fbcdn.net/hphotos-ak-ash3/526783_4214956938095_263849481_n.jpg)

Keep lobbying for the Android USB audio standardisation (i.e.USB DAC as a standard USB device, like a USB mass storage device, for Android smartphone/tablet).
http://code.google.com/p/android/issues/de...Summary%20Stars (http://code.google.com/p/android/issues/detail?id=24614&sort=-stars&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars)

Vote: Click on the star (it appears after signing in)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-06-22 21:28:11

The Samsung Galaxy S III interworks with the ODAC:
https://plus.google.com/1073547583314056441...sts/PCaM42irMeU (https://plus.google.com/107354758331405644147/posts/PCaM42irMeU)
http://pastebin.com/Jjq4xnT3 (http://pastebin.com/Jjq4xnT3)

SGS3 > digital audio stream >> USB DAC "ODAC" >> amp "O2" >> headphone

(http://cdn.head-fi.org/1/1d/1d13e78c_IMG_20120618_210615.jpeg)

It’s interesting that the SGS3 can power the ODAC, which is a USB powered 24/96 DAC, without a powered USB hub.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: saratoga on 2012-06-27 20:28:33

USB Audio

USB audio output support allows hardware vendors to build hardware such as audio docks that interface with Android devices. This functionality is also exposed with the Android Open Accessory Development Kit (ADK) to give all developers the chance to create their own hardware.

http://developer.android.com/about/versions/jelly-bean.html (http://developer.android.com/about/versions/jelly-bean.html)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-06-29 01:52:16

The USB DAC recommended by Google is a new type of device. It is not compatible with PC or Mac.
http://developer.android.com/tools/adk/aoa...l#audio-support (http://developer.android.com/tools/adk/aoa2.html#audio-support)
http://developer.android.com/tools/adk/adk2.html#play-audio (http://developer.android.com/tools/adk/adk2.html#play-audio)

(http://developer.android.com/images/usb-host-accessory.png)

A legacy USB DAC compatible with PC / Mac acts as a USB device, and a PC / Mac acts as a USB host.
A USB DAC recommended by Google acts as a USB host, and a Android smartphone / tablet acts as a USB device.

Personally, I prefer the legacy USB audio feature implemented by Samsung on Galaxy S III, which can interwork with a legacy USB DAC like FiiO E7 or ODAC.

The legacy USB audio feature is still specified in the Android specs:
http://developer.android.com/guide/topics/.../usb/index.html (http://developer.android.com/guide/topics/connectivity/usb/index.html)
http://developer.android.com/guide/topics/...y/usb/host.html (http://developer.android.com/guide/topics/connectivity/usb/host.html)
http://developer.android.com/reference/and...bConstants.html (http://developer.android.com/reference/android/hardware/usb/UsbConstants.html)
"USB_CLASS_AUDIO USB class for audio devices"

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: superconsumer on 2012-07-02 12:56:53

USB-Audio support for which ADCs with Line-In or S/P-DIF Input?
Everyone is talking about USB-DACs, but what about ADC?

Support for USB-Audio is good, but what USB-Soundcard with Line- or S/P-DIF-Inputs would be supported on an Android playthings?

I don't want to support the Apple-Imperials and don't want to buy a Droid as long as it has no possibilities to record HiFi-stereo sound from an Line-Input.
As long as this feature is not reliable implemented, for me a smartphone is not really smart as a consume-only gadget, but not a productive tool, so i still have to take my mp3-player/recorder and/or my wav-recorder with me or put my little notebook to make music. When is a Droid a real replacement for this? I heard about sc an pd on Android, but what's the use without Audio-I/O?

Thanks to all peaople developing and testing on this!

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: andy o on 2012-07-02 16:22:22

It seems Android lacks low latency audio, that's why there are no apps like garageband. http://code.google.com/p/android/issues/detail?id=3434 (http://code.google.com/p/android/issues/detail?id=3434). Some people are saying this improved with Jelly Bean, but that's to be seen yet.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-07-03 18:31:05

An Android 4.1 Jelly Bean-powered device can have both USB audio out modes: standard USB audio out and Android-specific USB audio out.
These features are at the Android kernel level.
http://developer.android.com/tools/adk/aoa...l#audio-support (http://developer.android.com/tools/adk/aoa2.html#audio-support)

"Android Open Accessory Protocol 2.0 includes optional support for audio output from an Android device to an accessory. This version of the protocol supports a standard USB audio class interface that is capable of 2 channel 16-bit PCM audio with a bit rate of 44100 Khz. AOA 2.0 is currently limited to this output mode, but additional audio modes may be added in the future.
To enable the audio support, the accessory must send a new USB control request: SET_AUDIO_MODE"

(http://a5.sphotos.ak.fbcdn.net/hphotos-ak-ash4/483343_4327320827122_2118288144_n.jpg)

(http://a3.sphotos.ak.fbcdn.net/hphotos-ak-prn1/555673_4327321307134_1636421775_n.jpg)

(http://a1.sphotos.ak.fbcdn.net/hphotos-ak-snc7/480480_4317734867479_2047049317_n.jpg)

It should be easy to enable standard USB audio out and Android-specific USB audio out on an Android 4.1 Jelly Bean-powered device with USB host capability.

Let's keep up the pressure on Google and the Android device manufacturers for the standard USB audio out:
http://code.google.com/p/android/issues/de...Summary%20Stars (http://code.google.com/p/android/issues/detail?id=24614&sort=-stars&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-07-08 18:24:01

The Samsung Galaxy S III interworks with the iBasso D2 Boa:
http://www.head-fi.org/t/552014/pictures-o...35#post_8509186 (http://www.head-fi.org/t/552014/pictures-of-your-portable-rig-part-xv/5535#post_8509186)

Samsung Galaxy S III > digital audio stream >> USB DAC/amp iBasso D2 Boa >> Sennheiser HD 518

(http://img10.imageshack.us/img10/7734/img5554y.jpg)

(http://www.ibasso.com/upimg/2008530233741.jpg)

(http://cdn.head-fi.org/c/ce/ce3f24bc_img5539uk.jpeg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-07-15 10:39:27

A list of standard USB DAC reportedly interworking with the Android-powered smartphone Samsung Galaxy S III for the time being:

Samsung Galaxy S III > digital audio stream >> USB OTG cable with USB Micro-A plug inserted in the S III >> standard USB DAC >> amp >> headphones

. AMB Labs Gamma2:
http://www.amb.org/audio/gamma2/ (http://www.amb.org/audio/gamma2/)
http://forum.xda-developers.com/showpost.p...p;postcount=279 (http://forum.xda-developers.com/showpost.php?p=27247705&postcount=279)

. C-Media chipset-based sound card Dynamode 7 channel USB 2.0:
http://www.chinacomputerparts.com/d-p11401...5616900-cables/ (http://www.chinacomputerparts.com/d-p1140199199635616900-cables/)
http://forum.xda-developers.com/showpost.p...p;postcount=449 (http://forum.xda-developers.com/showpost.php?p=27604946&postcount=449)

. Corsair HS1 Gaming headset (USB DAC/amp/headphones):
http://www.anandtech.com/show/3989/corsair...-gaming-headset (http://www.anandtech.com/show/3989/corsair-hs1-gaming-headset)
http://forum.xda-developers.com/showthread...17#post27238117 (http://forum.xda-developers.com/showthread.php?p=27238117#post27238117)

. FiiO E7 (USB DAC/amp):
http://fiio.com.cn/product/index.aspx?ID=2...p;MenuID=020301 (http://fiio.com.cn/product/index.aspx?ID=28&MenuID=020301)
http://www.androidnz.net/2012/07/galaxy-s-...iew-part-2.html (http://www.androidnz.net/2012/07/galaxy-s-iii-real-user-review-part-2.html)

. GoVibe Mini USB DAC:
http://www.jaben.com.au/collections/go-vib.../govibe-minidac (http://www.jaben.com.au/collections/go-vibe/products/govibe-minidac)
http://www.head-fi.org/t/614111/finally-di...15#post_8525675 (http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii/15#post_8525675)

. HeadAmp Pico (USB DAC/amp):
http://www.headamp.com/pico/pico_dac_amp/index.htm (http://www.headamp.com/pico/pico_dac_amp/index.htm)
http://www.head-fi.org/t/608535/wolfson-da...20#post_8495302 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/420#post_8495302)

. HeadRoom Total BitHead (USB DAC/amp):
http://www.headphone.com/learning-center/bithead-faq.php (http://www.headphone.com/learning-center/bithead-faq.php)
http://www.head-fi.org/t/595071/android-ph...35#post_8527516 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/135#post_8527516)

. HiFiMan Express HM-101:
http://www.head-fi.org/t/571330/hifiman-ex...ortable-usb-dac (http://www.head-fi.org/t/571330/hifiman-express-brand-and-hm-101-portable-usb-dac)
http://forum.xda-developers.com/showpost.p...p;postcount=291 (http://forum.xda-developers.com/showpost.php?p=27284184&postcount=291)

. iBasso D2 Boa (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=30 (http://www.ibasso.com/en/products/show.asp?ID=30)
http://www.head-fi.org/t/552014/pictures-o...35#post_8509186 (http://www.head-fi.org/t/552014/pictures-of-your-portable-rig-part-xv/5535#post_8509186)

. iBasso D5 (USB DAC/amp):
http://www.head-fi.org/t/556490/ibasso-d5-...her-usb-dac-amp (http://www.head-fi.org/t/556490/ibasso-d5-hj-yet-another-usb-dac-amp)
http://www.head-fi.org/t/614111/finally-di...15#post_8498377 (http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii/15#post_8498377)

. iBasso D12 (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=63 (http://www.ibasso.com/en/products/show.asp?ID=63)
http://www.head-fi.org/t/614111/finally-di...15#post_8525675 (http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii/15#post_8525675)

. Microsoft Philips Digital Sound System 80 (USB DAC/amp/speakers):
http://en.wikipedia.org/wiki/Digital_Sound_System_80 (http://en.wikipedia.org/wiki/Digital_Sound_System_80)
http://forum.xda-developers.com/showthread.php?t=1703218 (http://forum.xda-developers.com/showthread.php?t=1703218)

. Objective DAC (ODAC):
http://epiphany-acoustics.co.uk/our-produc...iature-usb-dac/ (http://epiphany-acoustics.co.uk/our-products/e-dac-24bit-miniature-usb-dac/)
http://www.jdslabs.com/item.php?fetchitem=46 (http://www.jdslabs.com/item.php?fetchitem=46)
http://www.headnhifi.com/index.php/shop/objective/odac (http://www.headnhifi.com/index.php/shop/objective/odac)
https://plus.google.com/1073547583314056441...sts/PCaM42irMeU (https://plus.google.com/107354758331405644147/posts/PCaM42irMeU)

. ODAC+O2 (USB DAC/amp):
http://epiphany-acoustics.co.uk/our-produc...r-with-usb-dac/ (http://epiphany-acoustics.co.uk/our-products/ehp-o2d-miniature-desktop-headphone-amplifier-with-usb-dac/)
http://www.jdslabs.com/item.php?fetchitem=48 (http://www.jdslabs.com/item.php?fetchitem=48)
http://www.headnhifi.com/index.php/shop/ob.../o2120527192048 (http://www.headnhifi.com/index.php/shop/objective/o2120527192048)
https://plus.google.com/1073547583314056441...sts/PCaM42irMeU (https://plus.google.com/107354758331405644147/posts/PCaM42irMeU)

. RSA Predator (USB DAC/amp):
http://www.raysamuelsaudio.com/products/predator (http://www.raysamuelsaudio.com/products/predator)
http://forum.lowyat.net/index.php?showtopi...;#entry52693606 (http://forum.lowyat.net/index.php?showtopic=2222840&st=20&p=52693606&#entry52693606)

. Topping D1 Mark 2 (USB DAC/amp):
http://translate.googleusercontent.com/tra...dszs9J4x85vGfDg (http://translate.googleusercontent.com/translate_c?hl=en&langpair=zh-TW%7Cen&rurl=translate.google.com&twu=1&u=http://www.tpdz.net/produce.asp%3Fid%3D25&usg=ALkJrhhte1Q6A1NnVWodszs9J4x85vGfDg)
http://forum.xda-developers.com/showpost.p...p;postcount=871 (http://forum.xda-developers.com/showpost.php?p=28673076&postcount=871)

. Topping TP30 (USB DAC/amp):
http://news.cnet.com/8300-5_3-0.html?keyword=Topping+TP-30 (http://news.cnet.com/8300-5_3-0.html?keyword=Topping+TP-30)
http://www.androidnz.net/2012/05/samsung-g...-usb-audio.html (http://www.androidnz.net/2012/05/samsung-galaxy-s-iii-usb-audio.html)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-07-16 00:41:54

The Samsung Galaxy S III interworks with the asynchronous USB DAC HRT Streamer II:
http://www.head-fi.org/t/608535/wolfson-da...65#post_8534856 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/465#post_8534856)

Samsung Galaxy S III > digital audio stream >> USB OTG cable with USB Micro-A plug inserted in the S III >> asynchronous USB DAC HRT Streamer II >> cMoyBB headphone amplifier >> headphones

(http://cdn.head-fi.org/c/c0/c02d7f65_USBOTG.jpeg)

(http://www.stateofgrace.net/polk/HRT_top.jpg)

(http://www.stateofgrace.net/polk/HRT_front.jpg)

(http://www.jdslabs.com/images/gallery/1.jpg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-07-16 00:44:52

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: dumdidum on 2012-07-16 09:22:39

DanBa,

gearporn on HA, O RLY?

edit: but thanks for the list in #35.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-07-17 17:04:47

Sorry for the double post!
I have asked a moderator to remove it.

Samsung Galaxy S III interworks with RSA Predator:
http://www.head-fi.org/t/595071/android-ph...50#post_8538933 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/150#post_8538933)

Samsung Galaxy S III > digital audio stream >> USB OTG cable >> USB DAC/amp RSA Predator >> IEM

(http://cdn.head-fi.org/5/54/54a3e4e1_DSCN7093.jpeg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: andy o on 2012-07-23 10:43:09

any testing on the Nexus 7? (BTW, I appreciate all this info, thanks!)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-07-23 21:33:33

As expected, for the time being the Nexus 7 doesn't interwork with standard USB DAC like FiiO E7 or FiiO E17:
http://www.head-fi.org/t/616125/google-nex...45#post_8525225 (http://www.head-fi.org/t/616125/google-nexus-7-tablet-tegra-3/45#post_8525225)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-07-24 08:48:58

A stock Jelly Bean powered Nexus 7 should be able to interwork with an upcoming Android-specific USB audio out-capable USB DAC, like the Gear4 speaker dock, that acts a USB host (and the Nexus 7 as a USB peripheral).
http://www.engadget.com/2012/06/30/gear4-s...an-at-google-i/ (http://www.engadget.com/2012/06/30/gear4-speaker-dock-supports-usb-audio-for-jelly-bean-at-google-i/)

Nexus 7 operating as a USB peripheral > digital audio stream >> Android-specific USB DAC "Gear4 speaker dock" operating as a USB host > Gear4 speaker dock’s amp > Gear4 speaker dock’s speakers

Anyway, the Android-specific USB audio driver is included in the Jelly Bean kernel source code of the Nexus 7:
http://forum.xda-developers.com/showthread.php?t=1736578 (http://forum.xda-developers.com/showthread.php?t=1736578)
https://github.com/edoko/Air_Kernel_for_GN/...dio_source.c#L2 (https://github.com/edoko/Air_Kernel_for_GN/blob/master/drivers/usb/gadget/f_audio_source.c#L2)

2 * Gadget Function Driver for USB audio source device
4 * Copyright © 2012 Google, Inc.

43 .bInterfaceClass = USB_CLASS_AUDIO,
44 .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL,

308 .bInterfaceClass = USB_CLASS_AUDIO,
309 .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING,

The standard USB audio driver is also included in the Jelly Bean kernel source code of the Nexus 7:
https://github.com/drewis/android_kernel_gr...d/usb/card.c#L2 (https://github.com/drewis/android_kernel_grouper/blob/android-tegra3-grouper-3.1-jb-fr2/sound/usb/card.c#L2)

2 * (Tentative) USB Audio Driver for ALSA

174 if ((altsd->bInterfaceClass != USB_CLASS_AUDIO &&
175 altsd->bInterfaceClass != USB_CLASS_VENDOR_SPEC) ||
176 altsd->bInterfaceSubClass != USB_SUBCLASS_AUDIOSTREAMING) {

692 .bInterfaceClass = USB_CLASS_AUDIO,
693 .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL }

a standard USB audio-enabled Nexus 7 operating as a USB host > digital audio stream >> standard USB DAC like FiiO E7 or Objective DAC operating as a USB peripheral >> amp >> headphones

It’s up to us to require Google & Android device manufacturers to enable standard USB audio!
http://code.google.com/p/android/issues/de...Summary%20Stars (http://code.google.com/p/android/issues/detail?id=24614&sort=-stars&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: probedb on 2012-07-24 13:35:35

The annoying thing with Google is they don't always fix even basic functionality. There's a bug in their file downloader which is usually used by all browsers which means you can't save anything that has .htaccess pwd protection in front of it. It's been open since 2008.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-07-27 15:01:07

A custom Nexus 7 interworks with a standard USB DAC:
http://www.head-fi.org/t/595071/android-ph...10#post_8565219 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/210#post_8565219)

modded Nexus 7 > digital audio stream >> USB OTG cable >> USB DAC Turtle Beach MICRO II > analog audio stream >> amp >> speakers
or
modded Nexus 7 > digital audio stream >> USB OTG cable >> Turtle Beach MICRO II > SPDIF digital audio stream >> SPDIF DAC/amp >> speakers

http://www.youtube.com/watch?v=KY7qWIu9bUM (http://www.youtube.com/watch?v=KY7qWIu9bUM)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-08-09 16:33:36

A custom Nexus 7 interworks with a standard USB DAC FiiO E10 (that doesn’t work with stock Samsung Galaxy S III for the time being):

custom Nexus 7 > digital audio stream >> USB DAC/amp FiiO E10 >> Sennheiser HD-380

Instructions for customizing a Nexus 7:
http://forum.xda-developers.com/showthread...nd#post29805237 (http://forum.xda-developers.com/showthread.php?p=29805237&highlight=asound#post29805237)
http://forums.slimdevices.com/showthread.p...;highlight=Udev (http://forums.slimdevices.com/showthread.php?82110-Instructions-for-connecting-USB-DAC-to-Touch&highlight=Udev)

"Code:
pcm.usbdac {
type hw;
card Audio;
}
ctl.usbdac {
type hw;
card Audio;
}
pcm.!default usbdac

Back up your asound.conf and add this (or for simplicity sake, replace it with this)

This allows me to use my Nexus 7 to play over my Fiio E10 USB DAC, N7 + E10 + HD380 == fun.

It's too late for me to work on combining this with the stock asound.conf.

It's in /etc/ on stock rom and works once replaced."
http://forum.xda-developers.com/showpost.p...p;postcount=472 (http://forum.xda-developers.com/showpost.php?p=29830741&postcount=472)

"We are lucky, no such file or luck on GN or SGS3 yet, need to first understand how alsa works on those phones.

Yes, double check you need the alteration.
I never got sounds out the USB DAC without it.
And now with it, plays fine with DAC, but also when DAC is not plugged, plays sounds as if I never changed anything.
Which is nice either way, not needing to change the file all the time.
Need to find out if/how I can modify the default device for np and sgs3 now, they neither had nor sorry the file.
No support meaning adding the file doesn't change anything there."
http://forum.xda-developers.com/showpost.p...p;postcount=497 (http://forum.xda-developers.com/showpost.php?p=29857696&postcount=497)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: andy o on 2012-08-12 20:20:53

Well, astoundingly, the Nexus 7 doesn't support headsets (headphone+mic) over its analog 3.5mm port. It's a TRS, and not TRRS like everyone assumed and it's standard with phones and tablets now. So the only fix for this would be to use USB audio. Has anyone been successful in making an external microphone work with those DACs that have a mic input, and their Android device?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-08-23 11:00:05

The Samsung Galaxy S III with Snapdragon SoC interworks with the HeadAmp Pico:
http://www.head-fi.org/t/552014/pictures-o...00#post_8636759 (http://www.head-fi.org/t/552014/pictures-of-your-portable-rig-part-xv/6300#post_8636759)

Samsung Galaxy S III > digital audio stream >> USB OTG cable (Micro-A plug inserted in the S III) >> USB DAC/amp HeadAmp Pico >> Beyerdynamic T5p

(http://cdn.head-fi.org/b/b2/b236a9b1_P1010402.jpeg)

(http://cdn.head-fi.org/f/f7/f714423d_P1010394.jpeg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-08-26 15:16:35

Samsung Galaxy S III with Snapdragon SoC & USB DAC/amp HeadAmp Pico:
http://www.head-fi.org/t/552014/pictures-o...30#post_8639661 (http://www.head-fi.org/t/552014/pictures-of-your-portable-rig-part-xv/6330#post_8639661)

(http://cdn.head-fi.org/e/e1/e1074d3d_2007-01-2621.35.28.jpeg)

(http://cdn.head-fi.org/b/b5/b5afa93b_2007-01-2621.36.20.jpeg)

Galaxy S III > digital audio stream >> USB OTG cable >> Pico >> V-Moda M-80

(http://cdn.head-fi.org/1/19/199b9dec_2007-01-2621.38.58.jpeg)

Galaxy S III > digital audio stream >> USB OTG cable >> Pico >> Thunderpants TP1

(http://cdn.head-fi.org/a/a9/a9ca7e76_2007-01-2621.41.55.jpeg)

Galaxy S III > digital audio stream >> USB OTG cable >> Pico >> Audez'e LCD-2

(http://cdn.head-fi.org/e/e0/e0efc376_100_1698.jpeg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-08-28 13:59:39

A Samsung Galaxy S III interworks with a USB DAC/amp FiiO E7:
http://www.mobile01.com/topicdetail.php?f=...p;last=38070269 (http://www.mobile01.com/topicdetail.php?f=568&t=2770200&m=s&s=20&r=9&last=38070269)

Samsung Galaxy S III > digital audio stream >> USB OTG cable (Micro-A plug inserted in the S III) >> FiiO E7 >> Westone UM3X

(http://www.avsforum.com/content/type/61/id/58938/width/500/height/1000/flags/LL.jpg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-08-28 14:01:35

A list of standard USB DAC reportedly interworking with a custom Android-powered tablet Asus/Google Nexus 7:

custom Google Nexus 7 > digital audio stream >> USB OTG cable with USB Micro-A plug inserted in the Nexus 7 >> standard USB DAC >> amp >> headphones

Slightly customized Nexus 7:
http://www.head-fi.org/t/595071/android-ph...25#post_8599585 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/225#post_8599585)
http://rootzwiki.com/topic/30129-kernel-ne...-cpu-oc-072912/ (http://rootzwiki.com/topic/30129-kernel-nexus-7-cifsnfsusb-otg-gpu-oc-cpu-oc-072912/)

. FiiO E7 (USB DAC/amp):
http://fiio.com.cn/product/index.aspx?ID=2...p;MenuID=020301 (http://fiio.com.cn/product/index.aspx?ID=28&MenuID=020301)
http://forum.xda-developers.com/showpost.p...mp;postcount=83 (http://forum.xda-developers.com/showpost.php?p=30281733&postcount=83)

. FiiO E10 (USB DAC/amp):
http://fiio.com.cn/product/index.aspx?ID=3...p;MenuID=020301 (http://fiio.com.cn/product/index.aspx?ID=37&MenuID=020301)
http://forum.xda-developers.com/showthread...nd#post29805237 (http://forum.xda-developers.com/showthread.php?p=29805237&highlight=asound#post29805237)

. Logitech Gaming Headset G930:
http://reviews.cnet.com/headsets/logitech-...7-34152980.html (http://reviews.cnet.com/headsets/logitech-gaming-headset-g930/4505-13831_7-34152980.html)
http://forum.xda-developers.com/showpost.p...;postcount=1409 (http://forum.xda-developers.com/showpost.php?p=30590889&postcount=1409)

. Practical Devices XM6 (USB DAC/amp):
http://www.practicaldevices.com/purchase_xm6.htm (http://www.practicaldevices.com/purchase_xm6.htm)
http://www.head-fi.org/t/624085/android-de...ut#post_8636550 (http://www.head-fi.org/t/624085/android-devices-compatible-with-usb-dac-audio-out#post_8636550)

. Turtle Beach Micro II:
http://www.turtlebeach.com/products/sound-...e-micro-ii.aspx (http://www.turtlebeach.com/products/sound-cards/audio-advantage-micro-ii.aspx)
http://www.head-fi.org/t/595071/android-ph...10#post_8565219 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/210#post_8565219)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-08-28 14:05:46

A list of standard USB DAC reportedly interworking with the Android-powered smartphone Samsung Galaxy S III:

stock Samsung Galaxy S III > digital audio stream >> USB OTG cable with USB Micro-A plug inserted in the S III >> standard USB DAC >> amp >> headphones

. AMB Labs Gamma2:
http://www.amb.org/audio/gamma2/ (http://www.amb.org/audio/gamma2/)
http://forum.xda-developers.com/showpost.p...p;postcount=279 (http://forum.xda-developers.com/showpost.php?p=27247705&postcount=279)

. Asus Xonar U3 (USB DAC/amp):
http://www.asus.com/Multimedia/Audio_Cards/Xonar_U3/ (http://www.asus.com/Multimedia/Audio_Cards/Xonar_U3/)
http://mybroadband.co.za/vb/showthread.php...l=1#post8551119 (http://mybroadband.co.za/vb/showthread.php/429589-Samsung-Galaxy-S3?p=8551119&viewfull=1#post8551119)

. Behringer UCA222:
http://www.behringer.com/en/Products/UCA222.aspx (http://www.behringer.com/en/Products/UCA222.aspx)
http://www.computeraudiophile.com/f6-dac-d...338/#post171651 (http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/usb-audio-enabled-android-powered-samsung-galaxy-s-iii-12338/#post171651)

. Beresford Caiman:
http://www.techradar.com/reviews/audio-vis...n-673787/review (http://www.techradar.com/reviews/audio-visual/hi-fi-and-audio/hi-fi-accessories/beresford-caiman-673787/review)
http://www.computeraudiophile.com/f6-dac-d...338/#post171651 (http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/usb-audio-enabled-android-powered-samsung-galaxy-s-iii-12338/#post171651)

. C-Media chipset-based sound card Dynamode 7 channel USB 2.0 (USB DAC/amp):
http://www.chinacomputerparts.com/d-p11401...5616900-cables/ (http://www.chinacomputerparts.com/d-p1140199199635616900-cables/)
http://forum.xda-developers.com/showpost.p...p;postcount=449 (http://forum.xda-developers.com/showpost.php?p=27604946&postcount=449)

. Cakewalk Sonar SPS 25:
https://www.cakewalk.com/support/kb/reader.aspx/2007013101 (https://www.cakewalk.com/support/kb/reader.aspx/2007013101)
http://www.computeraudiophile.com/f6-dac-d...338/#post171651 (http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/usb-audio-enabled-android-powered-samsung-galaxy-s-iii-12338/#post171651)

. Corsair HS1 Gaming headset (USB DAC/amp/headphones):
http://www.anandtech.com/show/3989/corsair...-gaming-headset (http://www.anandtech.com/show/3989/corsair-hs1-gaming-headset)
http://forum.xda-developers.com/showthread...17#post27238117 (http://forum.xda-developers.com/showthread.php?p=27238117#post27238117)

. FiiO E7 (USB DAC/amp):
http://fiio.com.cn/product/index.aspx?ID=2...p;MenuID=020301 (http://fiio.com.cn/product/index.aspx?ID=28&MenuID=020301)
http://www.androidnz.net/2012/07/galaxy-s-...iew-part-2.html (http://www.androidnz.net/2012/07/galaxy-s-iii-real-user-review-part-2.html)

. Furutech ADL Cruise (USB DAC/amp):
http://www.furutech.com/a2008/product2.asp?prodNo=399 (http://www.furutech.com/a2008/product2.asp?prodNo=399)
http://www.head-fi.org/t/608535/wolfson-da...85#post_8567838 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/585#post_8567838)

. GoVibe DAC:
http://jaben.net/forums/index.php?topic=2824.0 (http://jaben.net/forums/index.php?topic=2824.0)
http://forum.lowyat.net/index.php?showtopi...;#entry53317360 (http://forum.lowyat.net/index.php?showtopic=2440879&st=500&p=53317360&#entry53317360)

. GoVibe Mini USB DAC:
http://www.jaben.com.au/collections/go-vib.../govibe-minidac (http://www.jaben.com.au/collections/go-vibe/products/govibe-minidac)
http://www.head-fi.org/t/614111/finally-di...15#post_8525675 (http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii/15#post_8525675)

. GoVibe Petite (USB DAC/amp):
http://www.head-fi.org/t/290711/govibe-pet...s-little-update (http://www.head-fi.org/t/290711/govibe-petite-dac-amp-appreciation-thread-pics-little-update)
http://www.head-fi.org/t/595071/android-ph...95#post_8552452 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/195#post_8552452)

. HRT Music Streamer II:
http://highresolutiontechnologies.com/music-streamer-ii (http://highresolutiontechnologies.com/music-streamer-ii)
http://www.head-fi.org/t/608535/wolfson-da...65#post_8534856 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/465#post_8534856)

. HeadAmp Pico (USB DAC/amp): (Exynos-based S III has issues with Pico for the time being)
http://www.headamp.com/pico/pico_dac_amp/index.htm (http://www.headamp.com/pico/pico_dac_amp/index.htm)
http://www.head-fi.org/t/608535/wolfson-da...80#post_8539705 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/480#post_8539705)
http://www.head-fi.org/t/608535/wolfson-da...20#post_8638606 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/720#post_8638606)

. HeadRoom Total BitHead (USB DAC/amp):
http://www.headphone.com/learning-center/bithead-faq.php (http://www.headphone.com/learning-center/bithead-faq.php)
http://www.head-fi.org/t/595071/android-ph...35#post_8527516 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/135#post_8527516)

. HeadStage USB DAC cable:
http://www.inearmatters.net/2010/04/short-...-dac-cable.html (http://www.inearmatters.net/2010/04/short-review-headstage-usb-dac-cable.html)
http://www.headphiles.org/index.php/topic,....html#msg241979 (http://www.headphiles.org/index.php/topic,4452.msg241979.html#msg241979)

. HiFiMan Express HM-101:
http://www.head-fi.org/t/571330/hifiman-ex...ortable-usb-dac (http://www.head-fi.org/t/571330/hifiman-express-brand-and-hm-101-portable-usb-dac)
http://forum.xda-developers.com/showpost.p...p;postcount=291 (http://forum.xda-developers.com/showpost.php?p=27284184&postcount=291)

. iBasso D-Zero (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=73 (http://www.ibasso.com/en/products/show.asp?ID=73)
http://neutronmp.com/forum/viewtopic.php?f...;start=20#p1636 (http://neutronmp.com/forum/viewtopic.php?f=4&t=314&start=20#p1636)

. iBasso D2 Boa (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=30 (http://www.ibasso.com/en/products/show.asp?ID=30)
http://www.head-fi.org/t/552014/pictures-o...35#post_8509186 (http://www.head-fi.org/t/552014/pictures-of-your-portable-rig-part-xv/5535#post_8509186)

. iBasso D2+ Boa (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=42 (http://www.ibasso.com/en/products/show.asp?ID=42)
http://www.computeraudiophile.com/f6-dac-d...338/#post171651 (http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/usb-audio-enabled-android-powered-samsung-galaxy-s-iii-12338/#post171651)

. iBasso D5 (USB DAC/amp):
http://www.head-fi.org/t/556490/ibasso-d5-...her-usb-dac-amp (http://www.head-fi.org/t/556490/ibasso-d5-hj-yet-another-usb-dac-amp)
http://www.head-fi.org/t/614111/finally-di...ii#post_8462693 (http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii#post_8462693)

. iBasso D12 (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=63 (http://www.ibasso.com/en/products/show.asp?ID=63)
http://forum.xda-developers.com/showpost.p...p;postcount=924 (http://forum.xda-developers.com/showpost.php?p=29069294&postcount=924)

. KingRex UD-01:
http://www.kingrex.co.uk/dac.html (http://www.kingrex.co.uk/dac.html)
https://www.facebook.com/headfonia/posts/352787358128700 (https://www.facebook.com/headfonia/posts/352787358128700)

. Microsoft Philips Digital Sound System 80 (USB DAC/amp/speakers):
http://en.wikipedia.org/wiki/Digital_Sound_System_80 (http://en.wikipedia.org/wiki/Digital_Sound_System_80)
http://forum.xda-developers.com/showthread.php?t=1703218 (http://forum.xda-developers.com/showthread.php?t=1703218)

. NuForce Icon HDP (USB DAC/preamp/amp):
http://www.nuforce.com/hp/products/iconhdp/index.php (http://www.nuforce.com/hp/products/iconhdp/index.php)
http://www.head-fi.org/t/608535/wolfson-da...85#post_8567838 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/585#post_8567838)

. Objective DAC (ODAC):
http://epiphany-acoustics.co.uk/our-produc...iature-usb-dac/ (http://epiphany-acoustics.co.uk/our-products/e-dac-24bit-miniature-usb-dac/)
http://www.jdslabs.com/item.php?fetchitem=46 (http://www.jdslabs.com/item.php?fetchitem=46)
http://www.headnhifi.com/index.php/shop/objective/odac (http://www.headnhifi.com/index.php/shop/objective/odac)
https://plus.google.com/1073547583314056441...sts/PCaM42irMeU (https://plus.google.com/107354758331405644147/posts/PCaM42irMeU)

. ODAC+O2 (USB DAC/amp):
http://epiphany-acoustics.co.uk/our-produc...r-with-usb-dac/ (http://epiphany-acoustics.co.uk/our-products/ehp-o2d-miniature-desktop-headphone-amplifier-with-usb-dac/)
http://www.jdslabs.com/item.php?fetchitem=48 (http://www.jdslabs.com/item.php?fetchitem=48)
http://www.headnhifi.com/index.php/shop/ob.../o2120527192048 (http://www.headnhifi.com/index.php/shop/objective/o2120527192048)
https://plus.google.com/1073547583314056441...sts/PCaM42irMeU (https://plus.google.com/107354758331405644147/posts/PCaM42irMeU)

. Ordnance .25 (USB DAC/amp):
http://jaben.net/forums/index.php?topic=9984.0 (http://jaben.net/forums/index.php?topic=9984.0)
http://www.head-fi.org/t/614111/finally-di...ii#post_8462693 (http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii#post_8462693)

. RSA Predator (USB DAC/amp):
http://www.raysamuelsaudio.com/products/predator (http://www.raysamuelsaudio.com/products/predator)
http://www.head-fi.org/t/595071/android-ph...50#post_8538933 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/150#post_8538933)

. Topping D1 Mark 2 (USB DAC/amp):
http://translate.googleusercontent.com/tra...dszs9J4x85vGfDg (http://translate.googleusercontent.com/translate_c?hl=en&langpair=zh-TW%7Cen&rurl=translate.google.com&twu=1&u=http://www.tpdz.net/produce.asp%3Fid%3D25&usg=ALkJrhhte1Q6A1NnVWodszs9J4x85vGfDg)
http://forum.xda-developers.com/showpost.p...p;postcount=871 (http://forum.xda-developers.com/showpost.php?p=28673076&postcount=871)

. Topping TP30 (USB DAC/amp):
http://news.cnet.com/8300-5_3-0.html?keyword=Topping+TP-30 (http://news.cnet.com/8300-5_3-0.html?keyword=Topping+TP-30)
http://www.androidnz.net/2012/05/samsung-g...-usb-audio.html (http://www.androidnz.net/2012/05/samsung-galaxy-s-iii-usb-audio.html)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-09-14 22:23:49

Samsung Galaxy S III & Stoner Acoustics UD100, a tiny USB DAC based on ESS Sabre ES9023 chip:
http://forum.lowyat.net/index.php?showtopi...;#entry54596977 (http://forum.lowyat.net/index.php?showtopic=2452730&st=160&p=54596977&#entry54596977)
http://www.inearmatters.net/2012/09/tiny-d...-of-stoner.html (http://www.inearmatters.net/2012/09/tiny-dac-big-sound-impression-of-stoner.html)

Galaxy S III > digital audio stream >> UD100 >> Audio Technica ATH-CK100 triple balanced armature inner headphone

"Volume level is sufficient, no amp required."

(http://cdn.head-fi.org/f/fb/fb04c01a_DSC01545.jpeg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-09-15 20:43:30

Nexus 7 & USB DAC/amp FiiO E17:
http://www.head-fi.org/t/627459/use-a-stan...p-by-step-guide (http://www.head-fi.org/t/627459/use-a-standard-usb-dac-with-a-nexus-7-step-by-step-guide)

custom Nexus 7 > digital audio stream >> FiiO E17 >> Sennheiser HD 595

(http://cdn.head-fi.org/6/62/62299e63_15b2B.png)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: skamp on 2012-09-15 22:53:08

Why are you so obsessed with using USB DACs with smartphones and tablets? Why add bulk to portable devices? What's wrong with their internal DACs?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-09-18 09:30:23

Lots of spontaneous smiles!

"Spent my hour at lunch today listening [to a portable Hi-Fi rig], just totally engrossed. Lots of spontaneous smiles, which for me is the most meaningful metric of sound quality. Cherub Rock literally gave me goosebumps."
[NZtechfreak]
http://www.head-fi.org/t/552014/pictures-o...30#post_8637656 (http://www.head-fi.org/t/552014/pictures-of-your-portable-rig-part-xv/6330#post_8637656)

The portable Hi-Fi rig of NZtechfreak: SGS3 + USB DAC "HeadAmp Pico" + headphone "Beyerdynamic T5p"
http://www.head-fi.org/t/552014/pictures-o...00#post_8636759 (http://www.head-fi.org/t/552014/pictures-of-your-portable-rig-part-xv/6300#post_8636759)

(http://cdn.head-fi.org/b/b2/350x700px-LL-b236a9b1_P1010402.jpeg)

The rig of his 2&1/2 year old son: "a Voodoo'd S1 and some cheap TDK headphones"
http://www.head-fi.org/t/552014/pictures-o...45#post_8681221 (http://www.head-fi.org/t/552014/pictures-of-your-portable-rig-part-xv/6645#post_8681221)

(http://cdn.head-fi.org/8/80/350x700px-LL-805bfb5f_20120908_211502.jpeg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-09-18 09:35:38

Samsung Galaxy S III & Objective DAC:
NwAvGuy: ODAC May Update (http://nwavguy.blogspot.fr/2012/05/odac-may-update.html)
NwAvGuy: ODAC Released (http://nwavguy.blogspot.fr/2012/04/odac-released.html)

stock Galaxy S III > digital audio stream >> ODAC (i.e. Epiphany Acoustics E-DAC) >> Neco V3

(http://www.avsforum.com/content/type/61/id/67510/width/500/height/1000/flags/LL.jpg)

(http://www.avsforum.com/content/type/61/id/67511/width/500/height/1000/flags/LL.jpg)

(http://www.avsforum.com/content/type/61/id/67512/width/500/height/1000/flags/LL.jpg)

ODAC:
Epiphany Acoustics E-DAC 24-bit USB DAC Review | AVForums.com - UK Online (http://www.avforums.com/reviews/Epiphany-Acoustics-E-DAC-24-bit-USB-DAC-Review_339/Review.html)
Brief Odac impressions (http://www.head-fi.org/t/611778/brief-odac-impressions)

Neco V3:
NECO SOUNDLABS PORTABLE V.2 AMP (http://www.head-fi.org/t/513233/neco-soundlabs-portable-v-2-amp/75)
new V3 DUAL AMP portable headphone amplifier | eBay (http://www.ebay.co.uk/itm/new-V3-DUAL-AMP-portable-headphone-amplifier/140847730118?ssPageName=WDVW&rd=1&ih=004&category=14970&cmd=ViewItem)

ODAC + Neco V3:
Epiphany Acoustics E-DAC Review Thread (http://www.head-fi.org/t/619309/epiphany-acoustics-e-dac-review-thread#post_8684811)
NECO SOUNDLABS PORTABLE V.2 AMP (http://www.head-fi.org/t/513233/neco-soundlabs-portable-v-2-amp/105#post_8549304)
NECO SOUNDLABS PORTABLE V.2 AMP (http://www.head-fi.org/t/513233/neco-soundlabs-portable-v-2-amp/105#post_8478902)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-09-20 10:46:03

VentureCraft sees potential in Android & standard USB audio.
VentureCraft delays the release date of its latest headphone amplifier Go-Dap X in order to modify it so that it can interwork with the Samsung Galaxy S3.

"Go-Dap X releasing date in stores will be on Sep. 25th due to this Galaxy S3 modification."
http://www.venturecraft.jp/gadget_en/index.php (http://www.venturecraft.jp/gadget_en/index.php)

stock Samsung Galaxy S3 > digital audio stream >> short USB OTG cable from VentureCraft >> Go-Dap X USB DAC/amp >> headphones

(http://www.head-fi.org/content/type/61/id/685830/width/500/height/1000/flags/LL.jpg)

(http://www.head-fi.org/content/type/61/id/684843/width/500/height/1000/flags/LL.jpg)

(http://www.head-fi.org/content/type/61/id/684844/width/500/height/1000/flags/LL.jpg)

(http://www.head-fi.org/content/type/61/id/685833/width/500/height/1000/flags/LL.jpg)

http://www.youtube.com/watch?v=86cOdNXv1Iw (http://www.youtube.com/watch?v=86cOdNXv1Iw)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-09-22 10:19:32

Samsung Galaxy S III & Epiphany Acoustics EHP-O2D miniature desktop headphone amplifier with USB DAC:
http://www.totallydubbed.net/2012/09/17/un...2-interconnect/ (http://www.totallydubbed.net/2012/09/17/unboxing-pictures-initial-impressions-of-the-epiphany-acoustics-ehp-o2d-dac-headphone-amplifier-mj2-interconnect/)
http://noblehifi.blogspot.fr/2012/07/epiph...02d-review.html (http://noblehifi.blogspot.fr/2012/07/epiphany-acoustics-ehp-02d-review.html)
http://hifipig.com/epiphany-acoustics-ehp-...hone-amplifier/ (http://hifipig.com/epiphany-acoustics-ehp-o2-portable-headphone-amplifier/)
http://epiphany-acoustics.co.uk/our-produc...r-with-usb-dac/ (http://epiphany-acoustics.co.uk/our-products/heaphone-amplifiers/ehp-o2d-miniature-desktop-headphone-amplifier-with-usb-dac/)

Samsung Galaxy S III > digital audio out >> USB OTG cable >> Epiphany Acoustics EHP-O2D (i.e. ODAC + O2 combo) >> Denon AH-D2000

(http://www.avsforum.com/content/type/61/id/68919/width/500/height/1000/flags/LL.jpg)

(http://www.avsforum.com/content/type/61/id/68921/width/500/height/1000/flags/LL.jpg)

(http://www.avsforum.com/content/type/61/id/68922/width/500/height/1000/flags/LL.jpg)

(http://www.avsforum.com/content/type/61/id/68923/width/500/height/1000/flags/LL.jpg)

(http://www.avsforum.com/content/type/61/id/68924/width/500/height/1000/flags/LL.jpg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-09-23 09:53:39

Samsung Galaxy S III & affordable tiny Stoner Acoustics UD100:
http://forums.hardwarezone.com.sg/70075257-post210.html (http://forums.hardwarezone.com.sg/70075257-post210.html)
http://www.head-fi.org/t/626632/tiny-dac-b...s-ud100-vs-odac (http://www.head-fi.org/t/626632/tiny-dac-big-sound-impression-of-stoner-acoustics-ud100-vs-odac)
http://stoneracoustics.blogspot.fr/ (http://stoneracoustics.blogspot.fr/)

stock Galaxy S III > digital USB audio out >> UD100 >> Sennheiser IE80

(http://www.head-fi.org/content/type/61/id/687691/width/500/height/1000/flags/LL.jpg)

Like the ODAC, the heart of the Stoner Acoustics UD100 is the 24-bit ESS Sabre conversion chip.
http://www.esstech.com/PDF/ES9023%20PB%20R...PB%20110117.pdf (http://www.esstech.com/PDF/ES9023%20PB%20Rev%200.2aPB%20110117.pdf)

(http://www.head-fi.org/content/type/61/id/687695/width/500/height/1000/flags/LL.jpg)

(http://www.head-fi.org/content/type/61/id/687690/width/500/height/1000/flags/LL.jpg)

(http://www.head-fi.org/content/type/61/id/687696/width/500/height/1000/flags/LL.jpg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-09-27 20:47:13

Samsung Galaxy S III & xDuoo XP-1 USB DAC/amp:
Report (http://translate.google.fr/translate?hl=en&sl=zh-CN&u=http://www.erji.net/read.php%3Ftid%3D1320392&prev=/search%3Fq%3Dxduoo%2Bxp1%26hl%3Dfr%26biw%3D1366%26bih%3D655%26prmd%3Dimvns&sa=X&ei=wa1kUM-ZHMHJ0AWoyIHYBA&ved=0CDwQ7gEwAg)
xDuoo XP-1 (http://translate.google.fr/translate?hl=en&sl=zh-CN&u=http://www.xduoo.com/xduoo/ProductShow.asp%3Fid%3D47&prev=/search%3Fq%3Dxduoo%2Bxp1%26hl%3Dfr%26biw%3D1366%26bih%3D655%26prmd%3Dimvns&sa=X&ei=pZ9kUPqQB4nM0QXl9ICIDQ&ved=0CF0Q7gEwBg)

stock Galaxy S III > digital USB audio out >> xDuoo XP-1 >> headphones

(http://www.head-fi.org/content/type/61/id/688934/width/500/height/1000/flags/LL.jpg)

(http://www.head-fi.org/content/type/61/id/688937/width/500/height/1000/flags/LL.jpg)

(http://www.head-fi.org/content/type/61/id/688940/width/500/height/1000/flags/LL.jpg)

(http://www.head-fi.org/content/type/61/id/690095/width/500/height/1000/flags/LL.jpg)

(http://www.head-fi.org/content/type/61/id/690096/width/500/height/1000/flags/LL.jpg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-09-30 13:35:00

AudioQuest Bumblebee Android DAC:
http://www.avland.co.uk/aasp/audioquest/12...e/bumblebee.asp (http://www.avland.co.uk/aasp/audioquest/1220/bumblebee/bumblebee.asp)

(http://cdn.avsforum.com/e/e8/500x1000px-LL-e8c7377d_1012dragon.promo_.jpeg)

(http://cdn.avsforum.com/0/0e/500x1000px-LL-0e45061f_1012dragon.2.jpeg)

"Designed specifically for Android devices
24-bit ESS Sabre conversion chip
Supports all music files including 24-bit/192kHz lossless
Drives headphones directly with 3.5mm mini-jack output
Fixed or Variable output modes
Asynchronous transfer for accurate digital timing
64-position (computer-controlled) analog volume control
Isolated dual master clocks
Colour changing LED to indicate source sample rate"

I am wondering if the AudioQuest Bumblebee Android DAC is a standard self-powered USB DAC or an Android-specific USB DAC.
http://www.head-fi.org/t/595071/android-ph...nd-usb-dacs/135 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/135)

The AudioQuest Bumblebee should be likely an AudioQuest DragonFly with built-in rechargeable battery, because it "supports all music files including 24-bit/192kHz lossless".
http://www.head-fi.org/t/617241/audioquest...ng-tiny-dac-amp (http://www.head-fi.org/t/617241/audioquest-dragonfly-review-affordable-outstanding-tiny-dac-amp)
http://www.stereophile.com/content/audioqu...sb-da-converter (http://www.stereophile.com/content/audioquest-dragonfly-usb-da-converter)

And an Android-specific USB DAC can support only 16-bit/44.1kHz:
http://developer.android.com/tools/adk/aoa...l#audio-support (http://developer.android.com/tools/adk/aoa2.html#audio-support)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: Roseval on 2012-09-30 15:41:18

Audioquest's documentation is a bit confusing.
They talk about playing 24/192 but the Dragonfly USB is UAC1 therefore limited to 24/96 max.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-10-04 21:27:54

The standard USB audio is also enabled on stock Android 4.1 Jelly Bean-powered Samsung Galaxy Note II:
http://www.eprice.com.tw/mobile/talk/4523/4815783/1/1/ (http://www.eprice.com.tw/mobile/talk/4523/4815783/1/1/)

stock Galaxy Note II > digital USB audio out >> iBasso D12 Hj >> Westone UM3X

(http://www.head-fi.org/content/type/61/id/694155/width/500/height/1000/flags/LL.jpg)

(http://www.head-fi.org/content/type/61/id/694156/width/500/height/1000/flags/LL.jpg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-10-06 18:10:23

Yet another Stoner Acoustics UD100-based rig with FitEar TO GO! 334:
http://www.head-fi.org/t/597146/fitear-to-...75#post_8754519 (http://www.head-fi.org/t/597146/fitear-to-go-334-suyamas-custom-iem-made-universal/975#post_8754519)]http://www.head-fi.org/t/597146/fitear-to-...75#post_8754519
http://news.cnet.com/8301-13645_3-57486297...itear-togo-334/ (http://news.cnet.com/8301-13645_3-57486297-47/the-best-in-ear-headphone-in-the-world-the-fitear-togo-334/)]http://news.cnet.com/8301-13645_3-57486297...itear-togo-334/

stock Samsung Galaxy S3 > digital USB audio out >> USB OTG cable >> UD100 USB DAC >> Pico Slim amp >> FitEar TO GO! 334 IEM

(http://cdn.avsforum.com/a/af/500x1000px-LL-af355c96_6aa96e73_20121006_105416.jpeg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-10-11 18:33:39

Samsung Galaxy S III & Matrix Mini-i:
http://www.headfonia.com/matrix-mini-i-balanced-dac/ (http://www.headfonia.com/matrix-mini-i-balanced-dac/)
http://www.head-fi.org/t/595071/android-ph...65#post_8768166 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/465#post_8768166)

stock Galaxy S III > digital USB audio out >> USB OTG cable >> Matrix Mini-i >> headphones or amp

(http://www.avsforum.com/content/type/61/id/76659/width/500/height/1000/flags/LL.jpg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-10-12 08:06:16

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-10-13 12:57:43

Samsung Galaxy S III & HeadAmp Pico USB DAC/amp:
Pictures Of Your Portable Rig (part XV) (http://www.head-fi.org/t/552014/pictures-of-your-portable-rig-part-xv/7080#post_8757544)

stock Samsung Galaxy S III > digital USB audio out >> micro-A male to type-A female USB cable + type-A male to mini-B male USB adapter >> HeadAmp Pico >> V-Moda M-80

(http://www.avsforum.com/content/type/61/id/77430/width/500/height/1000/flags/LL.jpg)

(http://www.avsforum.com/content/type/61/id/77431/width/500/height/1000/flags/LL.jpg)

(http://www.avsforum.com/content/type/61/id/77432/width/500/height/1000/flags/LL.jpg)

(http://www.avsforum.com/content/type/61/id/77434/width/500/height/1000/flags/LL.jpg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-10-21 10:17:06

Custom Stoner Acoustics UD100 based on 24-bit ESS Sabre conversion chip:
Tiny DAC, Big Sound – Impression of Stoner Acoustics UD100 vs. ODAC (http://www.head-fi.org/t/626632/tiny-dac-big-sound-impression-of-stoner-acoustics-ud100-vs-odac/75#post_8784763)
http://stoneracoustics.blogspot.fr/ (http://stoneracoustics.blogspot.fr/)

Samsung Galaxy S III > digital USB audio out >> USB OTG cable >> custom UD100 cable >> amp >> headphones

(http://www.avsforum.com/content/type/61/id/80447/width/500/height/1000/flags/LL.jpg)

(http://cdn.avsforum.com/a/af/500x1000px-LL-af355c96_6aa96e73_20121006_105416.jpeg)

Samsung Galaxy S III > digital USB audio out >> USB OTG cable >> UD100 USB DAC >> Pico Slim amp >> FitEar TO GO! 334

(http://cdn.avsforum.com/3/35/500x1000px-LL-35313903_ahyguge8.jpeg)

Samsung Galaxy S III > digital USB audio out >> USB OTG cable >> HeadStage USB DAC cable >> RSA Protector amp >> JH Audio JH13

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: probedb on 2012-10-21 10:36:51

I'm not sure what this thread is about any more?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: skamp on 2012-10-21 11:34:53

http://goo.gl/S2d3O (http://goo.gl/S2d3O)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: Elbart on 2012-10-22 08:24:59

Quote from: skamp on 2012-10-21 11:34:53

http://goo.gl/S2d3O (http://goo.gl/S2d3O)

Holy s**t. That's some obsession...
And 4.1 has got USB audio. So...

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: probedb on 2012-10-22 10:29:52

Quote from: skamp on 2012-10-21 11:34:53

http://goo.gl/S2d3O (http://goo.gl/S2d3O)

It used to be about that, now it seems to be posts about what DACs etc to plug into an S3

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-10-27 00:54:50

Quote from: Elbart on 2012-10-22 08:24:59

Quote from: skamp on 2012-10-21 11:34:53
http://goo.gl/S2d3O (http://goo.gl/S2d3O)

Holy s**t. That's some obsession...
And 4.1 has got USB audio. So...

There are people and people. There are USB audio and USB audio.

(http://www.head-fi.org/content/type/61/id/699887/width/500/height/1000/flags/LL.jpg)

No Android 4.1 Jelly Bean-specific USB DAC is available for the time being.

About Android-specific USB audio:
"As of now, the standard Android releases do not include USB host support. Samsung decided to add this feature on their own. The Android folks are working on a funky USB dock protocol that works over USB (sort of like what Apple does) that, frankly, most of us developers think is stupid. There is certainly a push to put USB host support for standard devices (like audio, keyboards, etc.) into the normal Android releases."
[Pete Millett, design engineer from Apex Hi-Fi]
http://www.head-fi.org/t/632019/apex-glaci...75#post_8812425 (http://www.head-fi.org/t/632019/apex-glacier-amp-dac-review-and-appreciation-thread/75#post_8812425)

The lobbying for standard USB audio should go on.
It's on a right track thanks to Samsung.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-10-27 00:58:49

The Samsung Galaxy Note II can work with the FiiO E7. It can't operate with the CEntrance DACport LX:
http://www.head-fi.org/t/595071/android-ph...00#post_8804406 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/600#post_8804406)

stock Galaxy Note II > digital USB audio out >> USB OTG cable >> FiiO E7 USB DAC/amp >> Sennheiser HD598 headphones

(http://www.head-fi.org/content/type/61/id/706025/width/500/height/1000/flags/LL.jpg)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: andy o on 2012-10-27 06:35:18

Not sure what the advantage is. At first I was interested only cause I got a Nexus 7 and I have a pair of USB speakers gathering dust, but it's not worth the tweak really (have to reboot with the speakers connected). The actual official Nexus 7 implementation (with the dock/speakers as host) is the way to go, it will allow charging at least, functioning basically like an iPod dock (presumably even like the new "lightning" port docks which should be digital). If anything that should be standardized among devices and be more widespread.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-10-27 12:14:16

Quote from: andy o on 2012-10-27 06:35:18

The actual official Nexus 7 implementation (with the dock/speakers as host) is the way to go, it will allow charging at least, functioning basically like an iPod dock (presumably even like the new "lightning" port docks which should be digital).

It's possible to charge the Android smartphone / tablet in standard USB audio:
http://www.head-fi.org/t/595071/android-ph...05#post_8748466 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/405#post_8748466)

The Google guys should not know the Battery Charging Specification, Revision 1.2.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-10-27 12:18:59

A list of standard USB DAC reportedly interworking with the Android-powered smartphone Samsung Galaxy Note II:

stock Galaxy Note II > digital USB audio out >> USB OTG cable (micro-A plug inserted in the Note II) >> standard USB DAC >> amp >> headphones

. FiiO E7 (USB DAC/amp):
http://www.headfonia.com/fiio-e7-portable-dac/ (http://www.headfonia.com/fiio-e7-portable-dac/)
http://www.head-fi.org/t/595071/android-ph...80#post_8771744 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/480#post_8771744)

. GoVibe Magnum (USB DAC/amp):
http://www.head-fi.org/t/324577/review-gov...num-usb-dac-amp (http://www.head-fi.org/t/324577/review-govibe-magnum-usb-dac-amp)
http://www.head-fi.org/t/633201/confirmed-...-2#post_8809248 (http://www.head-fi.org/t/633201/confirmed-list-of-usb-dacs-for-the-galaxy-s3-international-us-or-note-2#post_8809248)

. HeadAmp Pico (USB DAC/amp): (via USB 2.0 hub)
http://www.headamp.com/pico/pico_dac_amp/index.htm (http://www.headamp.com/pico/pico_dac_amp/index.htm)
http://www.head-fi.org/t/625054/samsung-ga...30#post_8774905 (http://www.head-fi.org/t/625054/samsung-galaxy-note-2/30#post_8774905)

. iBasso D12 (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=63 (http://www.ibasso.com/en/products/show.asp?ID=63)
http://www.head-fi.org/t/595071/android-ph...05#post_8750862 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/405#post_8750862)

. Leckerton UHA-6S MKII (USB DAC/amp):
http://www.leckertonaudio.com/products/uha-6s-mkii/ (http://www.leckertonaudio.com/products/uha-6s-mkii/)
http://www.head-fi.org/t/625054/samsung-ga...30#post_8777791 (http://www.head-fi.org/t/625054/samsung-galaxy-note-2/30#post_8777791)

. Objective DAC (ODAC):
http://epiphany-acoustics.co.uk/our-produc...iature-usb-dac/ (http://epiphany-acoustics.co.uk/our-products/e-dac-24bit-miniature-usb-dac/)
http://www.jdslabs.com/item.php?fetchitem=46 (http://www.jdslabs.com/item.php?fetchitem=46)
http://www.headnhifi.com/index.php/shop/objective/odac (http://www.headnhifi.com/index.php/shop/objective/odac)
http://www.head-fi.org/t/595071/android-ph...35#post_8758515 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/435#post_8758515)

. ODAC+O2 (USB DAC/amp):
http://epiphany-acoustics.co.uk/our-produc...r-with-usb-dac/ (http://epiphany-acoustics.co.uk/our-products/ehp-o2d-miniature-desktop-headphone-amplifier-with-usb-dac/)
http://www.jdslabs.com/item.php?fetchitem=48 (http://www.jdslabs.com/item.php?fetchitem=48)
http://www.headnhifi.com/index.php/shop/ob.../o2120527192048 (http://www.headnhifi.com/index.php/shop/objective/o2120527192048)
http://www.head-fi.org/t/595071/android-ph...35#post_8758515 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/435#post_8758515)

. Sony PHA-1 (USB DAC/amp):
http://www.touchmyapps.com/2012/10/09/sony...-amp-in-review/ (http://www.touchmyapps.com/2012/10/09/sony-pha-1-idevice-dac-and-headphone-amp-in-review/)
http://www.head-fi.org/t/595071/android-ph...65#post_8769593 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/465#post_8769593)

. VentureCraft Go-Dap X (USB DAC/amp):
http://venturecraft.jp/gadget_en/index.php (http://venturecraft.jp/gadget_en/index.php)
http://www.head-fi.org/t/595071/android-ph...65#post_8769593 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/465#post_8769593)

So far, like the quad-core Exynos powered Galaxy S III, the new quad-core Exynos powered Samsung Galaxy Note II can work with the FiiO E7, the iBasso D12, Leckerton UHA-6S MKII, the ODAC and the VentureCraft Go-Dap X; has some issue with the HeadAmp Pico; and doesn’t work with the FiiO E17.

So, in regard to standard USB audio, the behaviour of the Galaxy Note II is likely identical to the behaviour of the Galaxy SIII.

A list of standard USB DAC reportedly interworking with the Android-powered smartphone Samsung Galaxy S III:

stock Samsung Galaxy S III > digital USB audio out >> USB OTG cable (micro-A plug inserted in the S III) >> standard USB DAC >> amp >> headphones

. AMB Gamma 1:
http://www.amb.org/audio/gamma1/ (http://www.amb.org/audio/gamma1/)
http://www.head-fi.org/t/608535/wolfson-da...80#post_8750043 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/780#post_8750043)

. AMB Gamma 2:
http://www.amb.org/audio/gamma2/ (http://www.amb.org/audio/gamma2/)
http://forum.xda-developers.com/showpost.p...p;postcount=279 (http://forum.xda-developers.com/showpost.php?p=27247705&postcount=279)

. Apex Glacier (USB DAC/amp):
http://www.ttvjaudio.com/Apex_High_Fi_Audi.../aaa0000010.htm (http://www.ttvjaudio.com/Apex_High_Fi_Audio_Glacier_portable_headphone_amp_p/aaa0000010.htm)
http://www.head-fi.org/t/608535/wolfson-da...25#post_8776449 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/825#post_8776449)

. Asus Xonar U3 (USB DAC/amp):
http://www.asus.com/Multimedia/Audio_Cards/Xonar_U3/ (http://www.asus.com/Multimedia/Audio_Cards/Xonar_U3/)
http://mybroadband.co.za/vb/showthread.php...l=1#post8551119 (http://mybroadband.co.za/vb/showthread.php/429589-Samsung-Galaxy-S3?p=8551119&viewfull=1#post8551119)

. Behringer UCA202 (USB DAC/amp):
http://www.behringer.com/EN/Products/UCA202.aspx (http://www.behringer.com/EN/Products/UCA202.aspx)
http://www.head-fi.org/t/595071/android-ph...40#post_8654226 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/240#post_8654226)

. Behringer UCA222 (USB DAC/amp):
http://www.behringer.com/en/Products/UCA222.aspx (http://www.behringer.com/en/Products/UCA222.aspx)
http://www.computeraudiophile.com/f6-dac-d...338/#post171651 (http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/usb-audio-enabled-android-powered-samsung-galaxy-s-iii-12338/#post171651)

. Beresford Caiman:
http://www.techradar.com/reviews/audio-vis...n-673787/review (http://www.techradar.com/reviews/audio-visual/hi-fi-and-audio/hi-fi-accessories/beresford-caiman-673787/review)
http://www.computeraudiophile.com/f6-dac-d...338/#post171651 (http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/usb-audio-enabled-android-powered-samsung-galaxy-s-iii-12338/#post171651)

. C-Media chipset-based sound card Dynamode 7 channel USB 2.0 (USB DAC/amp):
http://www.chinacomputerparts.com/d-p11401...5616900-cables/ (http://www.chinacomputerparts.com/d-p1140199199635616900-cables/)
http://forum.xda-developers.com/showpost.p...p;postcount=449 (http://forum.xda-developers.com/showpost.php?p=27604946&postcount=449)

. Cakewalk Sonar SPS 25:
https://www.cakewalk.com/support/kb/reader.aspx/2007013101 (https://www.cakewalk.com/support/kb/reader.aspx/2007013101)
http://www.computeraudiophile.com/f6-dac-d...338/#post171651 (http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/usb-audio-enabled-android-powered-samsung-galaxy-s-iii-12338/#post171651)

. Corsair HS1 Gaming headset (USB DAC/amp/headphones):
http://www.anandtech.com/show/3989/corsair...-gaming-headset (http://www.anandtech.com/show/3989/corsair-hs1-gaming-headset)
http://forum.xda-developers.com/showthread...17#post27238117 (http://forum.xda-developers.com/showthread.php?p=27238117#post27238117)

. FiiO E7 (USB DAC/amp):
http://www.headfonia.com/fiio-e7-portable-dac/ (http://www.headfonia.com/fiio-e7-portable-dac/)
http://www.androidnz.net/2012/07/galaxy-s-...iew-part-2.html (http://www.androidnz.net/2012/07/galaxy-s-iii-real-user-review-part-2.html)

. Furutech ADL Cruise (USB DAC/amp):
http://www.furutech.com/a2008/product2.asp?prodNo=399 (http://www.furutech.com/a2008/product2.asp?prodNo=399)
http://www.head-fi.org/t/608535/wolfson-da...85#post_8567838 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/585#post_8567838)

. GoVibe DAC:
http://jaben.net/forums/index.php?topic=2824.0 (http://jaben.net/forums/index.php?topic=2824.0)
http://forum.lowyat.net/index.php?showtopi...;#entry53317360 (http://forum.lowyat.net/index.php?showtopic=2440879&st=500&p=53317360&#entry53317360)

. GoVibe Mini USB DAC:
http://www.jaben.com.au/collections/go-vib.../govibe-minidac (http://www.jaben.com.au/collections/go-vibe/products/govibe-minidac)
http://www.head-fi.org/t/614111/finally-di...15#post_8525675 (http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii/15#post_8525675)

. GoVibe Petite (USB DAC/amp):
http://www.head-fi.org/t/290711/govibe-pet...s-little-update (http://www.head-fi.org/t/290711/govibe-petite-dac-amp-appreciation-thread-pics-little-update)
http://www.head-fi.org/t/595071/android-ph...95#post_8552452 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/195#post_8552452)

. HRT HeadStreamer (USB DAC/amp):
http://highresolutiontechnologies.com/headstreamer (http://highresolutiontechnologies.com/headstreamer)
http://www.head-fi.org/t/608535/wolfson-da...50#post_8677483 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/750#post_8677483)

. HRT Music Streamer II:
http://highresolutiontechnologies.com/music-streamer-ii (http://highresolutiontechnologies.com/music-streamer-ii)
http://www.head-fi.org/t/608535/wolfson-da...65#post_8534856 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/465#post_8534856)

. HeadAmp Pico (USB DAC/amp): (Exynos-based S III connected to Pico via USB 2.0 hub)
http://www.headamp.com/pico/pico_dac_amp/index.htm (http://www.headamp.com/pico/pico_dac_amp/index.htm)
http://www.head-fi.org/t/608535/wolfson-da...80#post_8539705 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/480#post_8539705)
http://www.head-fi.org/t/608535/wolfson-da...50#post_8688938 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/750#post_8688938)
http://www.head-fi.org/t/608535/wolfson-da...20#post_8638606 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/720#post_8638606)

. HeadRoom Total BitHead (USB DAC/amp):
http://www.headphone.com/learning-center/bithead-faq.php (http://www.headphone.com/learning-center/bithead-faq.php)
http://www.head-fi.org/t/595071/android-ph...35#post_8527516 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs-how-to-increase-the-issues-priority-with-google/135#post_8527516)

. HeadStage USB DAC cable:
http://www.inearmatters.net/2010/04/short-...-dac-cable.html (http://www.inearmatters.net/2010/04/short-review-headstage-usb-dac-cable.html)
http://www.headphiles.org/index.php/topic,....html#msg241979 (http://www.headphiles.org/index.php/topic,4452.msg241979.html#msg241979)

. HiFiMan Express HM-101:
http://www.head-fi.org/t/571330/hifiman-ex...ortable-usb-dac (http://www.head-fi.org/t/571330/hifiman-express-brand-and-hm-101-portable-usb-dac)
http://forum.xda-developers.com/showpost.p...p;postcount=291 (http://forum.xda-developers.com/showpost.php?p=27284184&postcount=291)

. iBasso D-Zero (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=73 (http://www.ibasso.com/en/products/show.asp?ID=73)
http://neutronmp.com/forum/viewtopic.php?f...;start=20#p1636 (http://neutronmp.com/forum/viewtopic.php?f=4&t=314&start=20#p1636)

. iBasso D2 Boa (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=30 (http://www.ibasso.com/en/products/show.asp?ID=30)
http://www.head-fi.org/t/552014/pictures-o...35#post_8509186 (http://www.head-fi.org/t/552014/pictures-of-your-portable-rig-part-xv/5535#post_8509186)

. iBasso D2+ Boa (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=42 (http://www.ibasso.com/en/products/show.asp?ID=42)
http://www.computeraudiophile.com/f6-dac-d...338/#post171651 (http://www.computeraudiophile.com/f6-dac-digital-analog-conversion/usb-audio-enabled-android-powered-samsung-galaxy-s-iii-12338/#post171651)

. iBasso D5 (USB DAC/amp):
http://www.head-fi.org/t/556490/ibasso-d5-...her-usb-dac-amp (http://www.head-fi.org/t/556490/ibasso-d5-hj-yet-another-usb-dac-amp)
http://www.head-fi.org/t/614111/finally-di...ii#post_8462693 (http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii#post_8462693)

. iBasso D10 (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=39 (http://www.ibasso.com/en/products/show.asp?ID=39)
http://www.head-fi.org/t/628374/samsung-ga...le#post_8735134 (http://www.head-fi.org/t/628374/samsung-galaxy-s3-to-dac-usb-micro-b-male-to-mini-b-male#post_8735134)

. iBasso D12 (USB DAC/amp):
http://www.ibasso.com/en/products/show.asp?ID=63 (http://www.ibasso.com/en/products/show.asp?ID=63)
http://forum.xda-developers.com/showpost.p...p;postcount=924 (http://forum.xda-developers.com/showpost.php?p=29069294&postcount=924)

. iQube v2 (USB DAC/amp):
http://www.i-qube.nl/index.php?id=24 (http://www.i-qube.nl/index.php?id=24)
http://forum.xda-developers.com/showpost.p...;postcount=1268 (http://forum.xda-developers.com/showpost.php?p=31207282&postcount=1268)

. JH Audio JH-3A (USB DSP/DAC/amp/JH16 CIEM):
http://www.jhaudio.com/product/jh-3a-dsp-a...tom-ear-monitor (http://www.jhaudio.com/product/jh-3a-dsp-amp-jh16-pro-custom-ear-monitor)
http://www.head-fi.org/t/595071/android-ph...85#post_8799910 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/585#post_8799910)

. Jabra GN 5035 (USB headset):
http://reviews.cnet.com/headsets/jabra-gn5...7-32462996.html (http://reviews.cnet.com/headsets/jabra-gn5035-headset/4505-13831_7-32462996.html)
http://forum.xda-developers.com/showpost.p...;postcount=1368 (http://forum.xda-developers.com/showpost.php?p=33203364&postcount=1368)

. KingRex UD-01:
http://www.kingrex.co.uk/dac.html (http://www.kingrex.co.uk/dac.html)
https://www.facebook.com/headfonia/posts/352787358128700 (https://www.facebook.com/headfonia/posts/352787358128700)

. Leckerton UHA-4 (USB DAC/amp):
http://www.leckertonaudio.com/products/uha-4/ (http://www.leckertonaudio.com/products/uha-4/)
http://www.head-fi.org/t/536982/leckerton-...20#post_8773152 (http://www.head-fi.org/t/536982/leckerton-audio-slimline-uha-4/1020#post_8773152)

. Leckerton UHA-6S MKII (USB DAC/amp):
http://www.leckertonaudio.com/products/uha-6s-mkii/ (http://www.leckertonaudio.com/products/uha-6s-mkii/)
http://www.head-fi.org/t/602493/new-lecker...35#post_8698006 (http://www.head-fi.org/t/602493/new-leckerton-uha-6s-mkii-portable-headphone-amplifier-announced-update-user-impressions-added-july-20th-2012/435#post_8698006)

. M-Audio Duo USB Audio Interface:
http://www.soundonsound.com/sos/oct02/articles/maudio.asp (http://www.soundonsound.com/sos/oct02/articles/maudio.asp)
http://www.head-fi.org/t/595071/android-ph...40#post_8788814 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/540#post_8788814)

. Matrix Mini-i (USB DAC/amp):
http://www.headfonia.com/matrix-mini-i-balanced-dac/ (http://www.headfonia.com/matrix-mini-i-balanced-dac/)
http://www.head-fi.org/t/595071/android-ph...65#post_8768166 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/465#post_8768166)

. Microsoft Philips Digital Sound System 80 (USB DAC/amp/speakers):
http://en.wikipedia.org/wiki/Digital_Sound_System_80 (http://en.wikipedia.org/wiki/Digital_Sound_System_80)
http://forum.xda-developers.com/showthread.php?t=1703218 (http://forum.xda-developers.com/showthread.php?t=1703218)

. Microsoft LifeChat LX-3000 (USB headset):
http://www.microsoft.com/hardware/en-au/p/...-3000/JUG-00003 (http://www.microsoft.com/hardware/en-au/p/lifechat-lx-3000/JUG-00003)
http://forum.xda-developers.com/showpost.p...;postcount=1355 (http://forum.xda-developers.com/showpost.php?p=32899845&postcount=1355)

. NuForce Icon HDP (USB DAC/amp):
http://www.nuforce.com/hp/products/iconhdp/index.php (http://www.nuforce.com/hp/products/iconhdp/index.php)
http://www.head-fi.org/t/608535/wolfson-da...85#post_8567838 (http://www.head-fi.org/t/608535/wolfson-dac-confirmed-for-galaxy-s3/585#post_8567838)

. NuForce Icon Mobile (USB DAC/amp):
http://www.6moons.com/audioreviews/nuforce10/mobile.html (http://www.6moons.com/audioreviews/nuforce10/mobile.html)
http://www.head-fi.org/t/595071/android-ph...35#post_8759826 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/435#post_8759826)

. Objective DAC (ODAC):
http://epiphany-acoustics.co.uk/our-produc...iature-usb-dac/ (http://epiphany-acoustics.co.uk/our-products/e-dac-24bit-miniature-usb-dac/)
http://www.jdslabs.com/item.php?fetchitem=46 (http://www.jdslabs.com/item.php?fetchitem=46)
http://www.headnhifi.com/index.php/shop/objective/odac (http://www.headnhifi.com/index.php/shop/objective/odac)
http://www.head-fi.org/t/595071/android-ph...15#post_8707637 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/315#post_8707637)

. ODAC+O2 (USB DAC/amp):
http://epiphany-acoustics.co.uk/our-produc...r-with-usb-dac/ (http://epiphany-acoustics.co.uk/our-products/ehp-o2d-miniature-desktop-headphone-amplifier-with-usb-dac/)
http://www.jdslabs.com/item.php?fetchitem=48 (http://www.jdslabs.com/item.php?fetchitem=48)
http://www.headnhifi.com/index.php/shop/ob.../o2120527192048 (http://www.headnhifi.com/index.php/shop/objective/o2120527192048)
http://www.facebook.com/permalink.php?stor...164588276945555 (http://www.facebook.com/permalink.php?story_fbid=410941392302962&id=164588276945555)

. Ordnance .25 (USB DAC/amp):
http://jaben.net/forums/index.php?topic=9984.0 (http://jaben.net/forums/index.php?topic=9984.0)
http://www.head-fi.org/t/614111/finally-di...ii#post_8462693 (http://www.head-fi.org/t/614111/finally-digital-out-for-galaxy-siii#post_8462693)

. RSA Intruder (USB DAC/amp):
http://www.raysamuelsaudio.com/products/intruder (http://www.raysamuelsaudio.com/products/intruder)
http://www.head-fi.org/t/627080/new-balanc...30#post_8781567 (http://www.head-fi.org/t/627080/new-balanced-portable-amp-from-rsa-w-dac/30#post_8781567)

. RSA Predator (USB DAC/amp):
http://www.raysamuelsaudio.com/products/predator (http://www.raysamuelsaudio.com/products/predator)
http://www.head-fi.org/t/595071/android-ph...50#post_8538933 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/150#post_8538933)

. Stoner Acoustics UD100:
http://stoneracoustics.blogspot.fr/ (http://stoneracoustics.blogspot.fr/)
http://forum.lowyat.net/index.php?showtopi...;#entry54596977 (http://forum.lowyat.net/index.php?showtopic=2452730&st=160&p=54596977&#entry54596977)

. Syba SD-AUD20101: (optical S/PFIF capable)
http://www.sybausa.com/productInfo.php?iid=1191 (http://www.sybausa.com/productInfo.php?iid=1191)
http://www.head-fi.org/t/595071/android-ph...75#post_8736082 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/375#post_8736082)

. Topping D1 Mark 2 (USB DAC/amp):
http://translate.googleusercontent.com/tra...dszs9J4x85vGfDg (http://translate.googleusercontent.com/translate_c?hl=en&langpair=zh-TW%7Cen&rurl=translate.google.com&twu=1&u=http://www.tpdz.net/produce.asp%3Fid%3D25&usg=ALkJrhhte1Q6A1NnVWodszs9J4x85vGfDg)
http://forum.xda-developers.com/showpost.p...p;postcount=871 (http://forum.xda-developers.com/showpost.php?p=28673076&postcount=871)

. Topping D2 (USB DAC/amp):
http://www.mightybigword.com/tnt/2012/03/t...-d2-dac-review/ (http://www.mightybigword.com/tnt/2012/03/topping-d2-dac-review/)
http://forum.xda-developers.com/showpost.p...;postcount=1357 (http://forum.xda-developers.com/showpost.php?p=32920194&postcount=1357)

. Topping TP30 (USB DAC/amp):
http://news.cnet.com/8300-5_3-0.html?keyword=Topping+TP-30 (http://news.cnet.com/8300-5_3-0.html?keyword=Topping+TP-30)
http://www.androidnz.net/2012/05/samsung-g...-usb-audio.html (http://www.androidnz.net/2012/05/samsung-galaxy-s-iii-usb-audio.html)

. VentureCraft Go-Dap X (USB DAC/amp):
http://venturecraft.jp/gadget_jp/gdx.php (http://venturecraft.jp/gadget_jp/gdx.php)
http://www.head-fi.org/t/595071/android-ph...15#post_8708233 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/315#post_8708233)

. xDuoo XP-1 (USB DAC/amp):
http://translate.google.fr/translate?hl=fr...w.asp%3FID%3D47 (http://translate.google.fr/translate?hl=fr&sl=zh-CN&tl=en&u=http%3A%2F%2Fwww.xduoo.com%2Fxduoo%2FProductShow.asp%3FID%3D47)
http://translate.google.fr/translate?tl=en...ved=0CCcQ7gEwAA (http://translate.google.fr/translate?tl=en&sl=zh-CN&u=http://www.erji.net/read.php%3Ftid%3D1320392%26page%3De&prev=/search%3Fq%3Dxduoo%2Busb%2Bdac%26hl%3Dfr%26biw%3D910%26bih%3D436%26prmd%3Dimvns&sa=X&ei=4GxdUKTrIaal0AXmr4HoDQ&sqi=2&ved=0CCcQ7gEwAA)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: skamp on 2012-10-27 12:53:40

Quote from: DanBa on 2012-10-27 00:54:50

There are people and people.

What?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-11-10 12:05:46

Galaxy Note II & Headstage Lyrix Pro USB total :
http://www.head-fi.org/t/595071/android-ph...95#post_8854850 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/795#post_8854850)

stock Galaxy Note II > digital USB audio out >> USB OTG cable (micro-A plug inserted in the Note II) >> Headstage Lyrix Pro USB total USB DAC/amp >> Beyerdynamic DT-770 Premium

(http://www.head-fi.org/content/type/61/id/717709/width/500/height/1000/flags/LL.jpg)

A list of standard USB DAC reportedly interworking with the Android-powered smartphone Samsung Galaxy Note II / S III:
http://www.head-fi.org/t/595071/android-ph...95#post_8855342 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/795#post_8855342)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-11-20 20:43:55

Samsung Galaxy S III & planar magnetic Audeze LCD-2:
http://www.head-fi.org/t/595071/android-ph...55#post_8873554 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/855#post_8873554)

stock Galaxy S III > digital USB audio out >> USB OTG cable (micro-A plug inserted in the Note II) >> RSA Intruder >> Audeze LCD-2 headphones

(http://cdn.avsforum.com/e/e1/500x1000px-LL-e1ef8fd0_721712.jpeg)

"The LCD-2's sound phenomenal in balanced mode off the Intruder... Yum."

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-12-08 13:35:13

The $43 Samsung Galaxy S3 + Car Stereo Upgrade for WAaaY better sound quality!
http://www.head-fi.org/t/639883/the-43-gal...r-sound-quality (http://www.head-fi.org/t/639883/the-43-galaxy-s3-car-stereo-upgrade-for-waaay-better-sound-quality)

Galaxy S3 > digital USB audio out >> "USB OTG" cable >> Behringer UCA202 USB DAC >> car stereo amp >> car stereo speakers

"...
And so what are the results you ask?

HOLY MOLY!
Not only is the audio quality MUCH improved, but the sound is so CLEAN now. No clicks, burps, or any other weird background noises. Just straight CD quality background silence.
Even my GPS voice sounds prettier. hahah
Bass is tighter and deeper. Highs are more revealing. Everything is so much better that a novice could tell it sounds better.

And yes, GPS navigation works perfectly. If I'm listening to Pandora or an MP3 and my GPS needs to talk, then my music will go several db quieter and GPS will speak up, then afterwards the music will automatically go back to full volume.

Also, one thing I hated about Bluetooth was everytime I turned my car off for just a minute, when I would power it back on the Bluetooth would not consistently reconnect. Well, this USB-OTG has been very consistent for me so far. Music just picks back up where it left off at and is fairly quick to do so.

Cons? Well, I haven't tested hands free calling yet. But I'm told it doesn't work with this USB-OTG to DAC configuration. Maybe there is a bluetooth solution for that. I dunno? And AOSP does not yet support DACs.

Pros? Freakin everything.

Pics are below.

Here is the DAC and the USB-OTG cable:
(http://www.avsforum.com/content/type/61/id/103020/width/500/height/1000/flags/LL.jpg)

This is how you configure the DAC.
You can probably also use the headphones output instead of the stereo RCA, but I didn't try it.
(http://www.head-fi.org/content/type/61/id/734842/width/500/height/1000/flags/LL.jpg)

I wired up my USB-OTG cable to my iBOLT dock. It comes up through my dash defrost vents.
(http://www.avsforum.com/content/type/61/id/103025/width/500/height/1000/flags/LL.jpg)

This is what the three connectors on the USB-OTG cable look like:
(http://www.avsforum.com/content/type/61/id/103026/width/500/height/1000/flags/LL.jpg)

Here is the DAC being wired up. I taped up the non-used RCA's to prevent anything bugging with them.
(http://www.avsforum.com/content/type/61/id/103027/width/500/height/1000/flags/LL.jpg)

I wrapped up the DAC with DUCT tape.
Not sure how or why the pic is sideways. It looks normal on my desktop.
(http://www.avsforum.com/content/type/61/id/103028/width/500/height/1000/flags/LL.jpg)

Hid it behind my dash.
(http://www.avsforum.com/content/type/61/id/103029/width/500/height/1000/flags/LL.jpg)

Here is the USB-OTG cable with my iBOLT dock.
(http://www.avsforum.com/content/type/61/id/103032/width/500/height/1000/flags/LL.jpg)

The car stereo w/audio cable attached. Some car stereos have the 3.5mm connector in the back. Or a dual-RCA input. I'd prefer one of those to have a cleaner install. Maybe someday I'll upgrade my car stereo.
(http://www.avsforum.com/content/type/61/id/103033/width/500/height/1000/flags/LL.jpg)

And here is the finished product. My S3 docked, charging and outputing beautiful digital music!
(http://www.head-fi.org/content/type/61/id/734861/width/500/height/1000/flags/LL.jpg)

.." [CZ Eddie]

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: [JAZ] on 2012-12-08 14:48:20

Quote from: DanBa on 2012-12-08 13:35:13

HOLY MOLY!
Not only is the audio quality MUCH improved, but the sound is so CLEAN now. No clicks, burps, or any other weird background noises. Just straight CD quality background silence.
Even my GPS voice sounds prettier. hahah
Bass is tighter and deeper. Highs are more revealing. Everything is so much better that a novice could tell it sounds better.

Are you aware that you are at Hydrogenaudio? You know... where there's a Term of service number 8 (http://www.hydrogenaudio.org/forums/index.php?showtopic=3974#entry149481) that goes against gratuitously giving audio quality impressions.

But even then, haven't you forgot to say versus what are you comparing it to?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: OzarkVe on 2012-12-08 16:23:22

I was actually interested in the topic name but should be renamed the DanBa/BaDan show...

That all aside - one gentleman asked a few pages ago, 'what's wrong with the internal DAC'. I like the ABX philosophy here, but I don't know how you can do a ABX with the internal dac vs external. I know over on soundexpert they tested devices but it's an aged list.

Using the same philosophy, and coming to the realization that I thought I had pretty good ears.... but find that 96k aac files are 'pretty good' for listening on a portable level AND being a recovering audioholic - I wonder how much 'better' adding complexity is to this system.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: skamp on 2012-12-08 17:25:55

Quote from: OzarkVe on 2012-12-08 16:23:22

I don't know how you can do a ABX with the internal dac vs external

Record the two outputs with a good recording device, and ABX that, I guess?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2012-12-08 17:59:35

Quote from: [JAZ] on 2012-12-08 14:48:20

But even then, haven't you forgot to say versus what are you comparing it to?

"No [more] clicks, burps, or any other weird background noises. Just straight CD quality background silence."

If you read the linked post, the guy has compared his car stereo system with analog USB audio out (i.e. Samsung-proprietary line out) and with digital USB audio out.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: [JAZ] on 2012-12-08 18:15:28

Analog USB audio??? What does that mean?
[Edit: Ok, i found this link (http://forum.xda-developers.com/showthread.php?t=1748311) that somehow talks about using the USB cable as an analog output... Never heard of this before, so i cannot even talk about how it is supposed to be implemented)

So.. I have to assume, somehow, that the analog circuitry of the SGS3 (used for headphones) has operational noises, similar to those that happens on computers when moving the mouse or reading the hard drive?

At last, it is not possible to get CD quality background silence, because he's using the (analog) line in of the radio.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: OzarkVe on 2012-12-08 21:00:36

Quote from: skamp on 2012-12-08 17:25:55

Quote from: OzarkVe on 2012-12-08 16:23:22
I don't know how you can do a ABX with the internal dac vs external

Record the two outputs with a good recording device, and ABX that, I guess?

Not sure what would constitute a 'good recording device', but what I have available is my laptop mic input where I could record some sample via the phone jack to HD and then compare that to another sample the same way. Is there a 'standard / acceptable method' to match the output levels so there's no loudness bias? Sorry, this is probably OT for the thread a little.. Wait... I don't even own a DAC.. crap... maybe we can use a sample off of the sample section here and we can swamp converted samples for ABX'ing?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: andy o on 2012-12-12 17:12:20

Wow, that looks messy. Especially for the car, I've realized that bluetooth is probably a great thing. I've been temporarily using my Nexus 4 with my little Jambox stuck on my dashboard, while I figured out what to do with the gaping hole where the (now stolen) stereo used to be, without having to get another one. Music and receiving calls is pretty seamless. So I just bought this little BT adapter (http://www.ebay.com/itm/180895512238?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649), which comes with music controls as well. Will be connected to a little amp and most of the stuff will be hidden inside the hole or somewhere else. When something reasonable comes out, I'll get a Qi wireless charging dock for the N4 and I'll be completely wireless in the car.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: DanBa on 2013-01-26 19:29:58

The compatibility list of Android devices / USB DAC is regularly updated at the following topic:
http://www.head-fi.org/t/595071/android-ph...d-usb-dacs/1500 (http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/1500)

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: kwanbis on 2013-01-26 20:15:04

This is the most gallant thread on a long time.

People actually waste so much time and energy on this bs instead of just connecting to the aux?

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: ChronoSphere on 2014-07-07 14:43:06

Quote from: kwanbis on 2013-01-26 20:15:04

People actually waste so much time and energy on this bs instead of just connecting to the aux?

If the analog output has a good quality, sure. But what if it doesn't? I had random clicks on my old nexus 7 tablet when listening to music via the headphone output. Connecting an USB card could have solved this, but it wasn't possible. According to this (http://blog.gsmarena.com/usb-audio-coming-stock-android-l-release/), Android L will have this feature added.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: skamp on 2014-07-07 16:59:58

Quote from: ChronoSphere on 2014-07-07 14:43:06

Connecting an USB card could have solved this, but it wasn't possible.

Or, you could get a much smaller and infinitely less cumbersome portable music player that works well, like a Fuze+ with Rockbox and a 32 GB microsdhc card.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: kornchild2002 on 2014-07-07 17:26:52

Quote from: skamp on 2014-07-07 16:59:58

Or, you could get a much smaller and infinitely less cumbersome portable music player that works well, like a Fuze+ with Rockbox and a 32 GB microsdhc card.

Although being a solution, it goes around the whole ideology of using a single device for everything. I used my 64GB iPhone 5 as my sole means of portable music playback along with having the option to make phone calls, text, browse the internet, act as a GPS, and even implement as a point-and-shoot digital camera. I recently upgraded to a Samsung Galaxy S5 with a 128GB microSDXC card. Again, it is my all-in-one device and having a dedicated music player, especially with a "paltry" 32GB of storage, pretty much defeats the purpose of having an all-around device with that much storage.

I used to rely on my Droid X as my smartphone, camera, internet browser, and GPS while turning to a 64GB iPod touch for music playback. I did that for 2 years (actually 5 years in total since I used to just have a cellphone and an iPod) and quickly grew tired of it. The ability to have an all-in-one device, with more than enough storage to house my 5-star playlist, is extremely convenient.

Having said all of that, I haven't had any issues with Galaxy S5 as I just rely on Bluetooth when in my car. I "installed" an aftermarket Bluetooth 4.0 hands free accessory that outputs audio to my car's aux input. It has aptX so I've been pleased with the results thus far, nothing to really complain about for mobile listening. I plugged my S5 directly into my car's aux port prior to that and again, was pleased with the results. I just wanted something that was wireless so I wouldn't have to take my phone out of my pocket just to listen to music.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: skamp on 2014-07-07 17:44:13

Quote from: kornchild2002 on 2014-07-07 17:26:52

Although being a solution, it goes around the whole ideology of using a single device for everything.

One tablet + one USB DAC = Two devices

One tablet + one good DAP = Two devices

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: ChronoSphere on 2014-07-07 18:37:29

Tablet + USB card = one music collection to sync
Tablet + DAP = two music collections to sync

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: kornchild2002 on 2014-07-07 18:59:43

Quote from: skamp on 2014-07-07 17:44:13

One tablet + one USB DAC = Two devices

One tablet + one good DAP = Two devices

But you're still relying on one actual audio device for playback. Leave the DAC in the car and just plug it into the smartphone when driving. As previously pointed out, it also means syncing multiple devices. This used to be the norm, I did it all the time with my iPod classic and iPod nano back during my regular cellphone days. Then it was syncing some content (mainly pictures) across my smartphone and iPod touch. Now it's just much, much easier to sync content to one device and use that device for everything. Smartphones used to be Jack of all trades, master of none devices and DAPs would still provide a better music playback experience. That really isn't the case anymore. The iPhone is the same exact music experience as an iPod touch and, with numerous apps available, there is bound to be something in the Google Play Store that fits the audio playback needs of people.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: skamp on 2014-07-07 20:04:15

What? No. We've established that the tablet sucks ass for music (with a limited space of 32 GB and a 100+ ohms output impedance, it does suck). That's why the DAC is needed.

The only device you need to sync (music to) is the DAP.

Look, if your device sucks so bad that you need an external DAC (which you need to charge too and which will be hanging on your supposedly portable tablet device), you better do your homework and get a "single device" that doesn't horribly suck at audio. Anything else is just your usual Head-Fi audiophoolery non-sense. Next thing you know, you'll be buying silver interconnects for 200 squid.

Also, what's all this talk about a "single device" that includes (1) a tablet and (2) a smartphone? That's… one, two devices. And (3) a USB DAC. That's… THREE!

Oh and, your smartphone and tablet and USB DAC will be sucking up so much power, you'll need (4) an external battery pack! That's FOUR! Not counting (5) the portable headphone amplifier because that part of your USB DAC doesn't do the job (FIVE).

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: saratoga on 2014-07-07 20:22:12

Qualcomm devices uniformly have low output impedance, and relatively close to 16 bit limited performance, so the scope for using an external DAC is mostly limited to a handful Tegra devices like the old Nexus 7 and very cheap tablets with lowend SOCs.

More interesting IMO is the ability to play audio through USB while charging while avoiding issues like ground loops. It would be great to see support for 2 amp charging + digital output in future stock car stereos and receivers.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: kornchild2002 on 2014-07-07 22:38:29

Quote from: skamp on 2014-07-07 20:04:15

What? No. We've established that the tablet sucks ass for music (with a limited space of 32 GB and a 100+ ohms output impedance, it does suck). That's why the DAC is needed.

I am not talking about using a tablet, at all. I've very clearly stated "smartphone" in all of my posts. Others might be talking about a tablet but I am not and, after conducting a little search, have determined that the Nexus 7 is not the only Android device that has issues with analog audio output as well as Bluetooth connectivity. The Galaxy S4 and S5 have popping/clicking issues when relying on the 3.5mm headphone output (though I haven't experienced it, constant forum entries show otherwise), the Galaxy S4 and S5 have known Bluetooth issues ever since KitKat came out (again, I haven't experienced it but again, the interwebs disagrees), the HTC One M8 is experiencing similar Bluetooth and headphone output issues, and so are many other KitKat devices. The main issue appears to be surrounded by Android 4.4.

Despite all that, my "one device" ideology still applies to smartphones (as I've previously discussed) and to tablets. In this case, some people use their tablets as their media device. They sync movies, photos, music, books, and apps to the tablet. Using a DAP instead of the tablet means they have to sync movies, photos, books, and apps to the tablet while syncing music to their DAP. Again, they will be carrying two devices. This way of thinking, something of which I participated in for a really long time, is outdated especially in more modern times where smartphones and tablets can serve more than one purpose. Gone are the days when a dedicated DAP is required. However, that doesn't mean that smartphones, tablets, and DAPs aren't without issues. That's what is trying to be tackled here. I would never put a USB amp in my car and plug that in for audio output in my smartphone. I think the root of the issue, i.e. what appears to be Android, needs to be solved first especially since iPhone users are not reporting these kinds of problems.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: Audible! on 2014-07-08 00:38:10

Chris Heinonen at anandtech has done some actually objective cell phone analog output quality testing using an APx582 and various impedance dummy loads. This article (http://www.anandtech.com/show/8078/smartphone-audio-testing-htc-one-m8-and-samsung-galaxy-s5) compares the HTC One M8 and Galaxy S5 and explores their current methodology in a bit of depth.

While both the S5 and M8 use a rather similar Qualcomm SoC (Snapdragon 801 family), the M8 has considerably more power being pumped through the headphone jack - 55mw (@16ohm) versus 22mw for the S5. It also has a stupid "Beats Audio" EQ curve, which is happily optional. At any given volume level, the M8 fares better in terms of objective quality metics; that said, both phones are quite good compared to the issues seen in the first article. (http://www.anandtech.com/show/7567/smartphone-audio-quality-testing)

Consequently, the SoC model or phone vendor cannot always be assumed to be the 'limiting factor' on cell phone analog audio output quality.

Indeed, in the first article (http://www.anandtech.com/show/7567/smartphone-audio-quality-testing), the differences between the Nexus 5 and the (all-but-identical: same manufacturer, Qualcomm SoC is the identical MSM8974 'dragon 800) LG G2 are quite interesting given the hardware similarities.

These articles may provide an illustration of why people are attaching devices to their Android phones in order to get a digital audio out that can then be converted by a DAC of the users' choice.

Edit: Indeed, the HTC EQ curve associated with "Beats Audio" might be sufficiently disconcerting for music fans with limited technical knowledge, that I wouldn't be surprised if some people are trying to get digital out in order to defeat a software EQ curve that can be defeated in seconds...if you know where to look.

Title: [Tell Google to] Enable USB audio on any Android 4.0 smartphone/tablet
Post by: andy o on 2014-07-30 01:16:01

This is finally coming to Android L, BTW, so there's that. Be interesting how this plays out on Android Auto. I'm hoping for an aftermarket single DIN Android Auto stereo, though I don't know if the manufacturers will bother given that the screen would have to be smallish.

HydrogenAudio

CD-R and Audio Hardware => Audio Hardware => Topic started by: DanBa on 2012-02-12 10:45:22