Hi-Rez recordings (have heard rumors, but have not been able to verify that the Boston Audio Society’s double-blind tests that resulted in the release of the well-known “Audibility of a CD-Standard A/D/A Loop Inserted into High-Resolution Audio Playback” paper were faulty because a high resolution master was not actually used.
For tube amps and/or pre-amps, different tubes will alter the sound.
can you either point me to some threads/sites and/or verify if the following information is accurate?
What doesn’t matter:As long as relevant specs are met (e.g., USB cable meets relevant specs for USB 2.0 or 3.0; HDMI cables have appropriate features for specific usage, etc.), there is not any audible difference in SQ between inexpensive cables/speaker wires and 'audiophile' cables.
Quote from: sawdin on 03 January, 2013, 11:23:31 AMHi-Rez recordings (have heard rumors, but have not been able to verify that the Boston Audio Society’s double-blind tests that resulted in the release of the well-known “Audibility of a CD-Standard A/D/A Loop Inserted into High-Resolution Audio Playback” paper were faulty because a high resolution master was not actually used.The audition samples included both SACDs/DVD-As sourced from 'high resolution masters' (i.e., purely digital recordings of high sample rate/bit depth) and SACDs/DVD-As that were sourced from analog tapes (which audiophiles seem to consider 'high res' enough when used as sources for their precious vinyl releases... but apparently not good enough this time).Another important point is that participants, who included self-professed audiophiles and recording professionals, were allowed to use their own 'revealing' audition samples too. This does not seem to have resulted in any better performance.So I would be skeptical of the wounded-ego caterwauling of 'audiophiles' about this so-called issue.
Ethan Winer has a web page with some good information.There are some other things that can sometimes matter, such as amplifier power, noise, distortion and frequency response. My home theater system with surround sound and huge speakers (including a pair of 15" subwoofers) sounds a LOT better than my portable boom box. With a (resonably good) digital source and modern electronics, distortion and frequency response are usually better than human hearing. But, if you have an analog source (vinyl records or tape), these can be big issues. Noise can be an issue with amplifiers. Once the signal hits the speakers/headphones, every speaker/headphone has audible differences in frequency response. And of course, speakers & amplifiers can distort if over-driven.QuoteFor tube amps and/or pre-amps, different tubes will alter the sound.A good tube amplifier can sound just as good as a modern solid state amplifier. It just costs 5 - 10 times as much to build an equivalent tube amp. So, by using 1950's technology, you can end-up with something that sounds just as good as a modern amplifier, at a higher cost and with less energy efficiency! I assume McIntosh tube amps have no sound of their own, and sound identical to any good solid state amp. It IS possible to build a tube amp that's immune to normal tube variations. Tubes do vary, and their characteristics change as they age. In my opinion, it's a poor design if changing tubes (or aging tubes) changes the sound (assuming the tube has not "worn-out", died, or is otherwise out-of-spec). If you ship an amp, and the specs change after a few weeks or a few months... It might get better, or it might get worse depending on how the tubes age... The manufacturer has no idea how the amp sounds, and that's just very poor engineering! But, some tubes amps are designed to have a "tube sound", and sometimes changing to a different brand tube will change the sound. For example, guitar amplifiers are not designed to be "hi-fi". The guitar amp/cabinet are part of the overall instrument sound. A Marshall amp sounds different from a Fender amp, and that's intentional. Guitar players often prefer tube amps, and they often like the way tube amps sound when driven into distortion.
Quote from: sawdin on 03 January, 2013, 11:23:31 AMcan you either point me to some threads/sites and/or verify if the following information is accurate?Doug linked to an article on my web site that offers a better way to list what matters and what doesn't. It's not that tubes or DACs or wires etc matter or not. What's important are how the known audio parameters such as frequency response and distortion are affected, and by how much.--Ethan
Thanks for the reply...what I had read made it sound as if the sample that was supposedly hi-rez was, in fact, not hi-rez. That is quite different than your explanation. Gee, I wonder if the post I read was 'intentionally misleading', lol
I should have been more clear in noting that if one wanted to 'change the sound' of a tube-amp, they could do so by changing tubes.
Is there a single case of "clocks/jitter" being audible? I was pretty certain the answer to that is "no".