Quote:
Originally Posted by tojo_m
While this may be true in this case( snap in adapter vs USB ), the argument may not hold always true even for digital transmission of audio, since the transmission device may dynamically compress (in a lossy fashion)the data depending on factors such a estimated bandwidth of the channel.
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MP3/ACC audio is encoded at a bitrate of 320 kbps (on the high side). Even crappy old USB 1.0 was capable of 1.5 mbps on the low side, and 12 mbps in most implementations. I cannot think of a reason to compress audio for transport any further, given the speed, low cost, and ubiquity of high-speed transport interfaces and DACs.
Can't say it's impossible, but highly improbable.