DAC IV stages Reply #50 – 2013-02-22 19:36:35 Quote from: John_Siau on 2013-02-22 19:13:17Bottom line, some MP3 players may use a combination of analog and digital gain control (see MAS3539F) .Like I said above, modern devices do have digital mixers. So what? However, the MAS isn't a modern device. Its a 1990s hardware MP3 decoder with no CPU. It dates back to a time when mobile CPUs were too slow to process audio. If you're really going to try and argue this, do you want to pick something from at least this millenium Quote from: John_Siau on 2013-02-22 19:13:17Others only use digital gain control (see CS42L73).Did you see above where I showed that this is not true? Like I said before, you're just wrong about "almost all" of these devices using software volume control. I've never seen a portable device that uses software volume control, and apparently you have not either. Or if you have, feel free to tell me about it . . .