Quote:
Originally Posted by Nightfly
by subs do you mean Bass? ........ 
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subs/sub frequency, 80Hz and below (or at least where a crossover in a decent system is set for the subwoofer) - the stuff you feel as much if not more than you hear. At best, it turns to mush with lower bitrates which is why I never purchased music from the big download sites that charged $0.99 for crummy 128 bitrate.
For me, it has always been the sub-frequencies that I first and most clearly notice the differences in when comparing bitrates though it doesn't take much effort to hear deterioration in the upper frequencies when using a bitrate of 128 and lower.
In a medium/large venue with a subwoofer pumping out an average of 500 watts RMS or more an MP3 using a bitrate of 128 really makes a system sound like garbage yet you can cut back on the subs and the MP3 sounds pretty decent though lacking in punch/crunch.
Deterioration in higher frequencies can usually be compensated for with a BBE Sonic Maximizer (or similar enhancer) which will do a decent job recovering that cymbal sizzle/sparkling female voice/etc... but no such luck with subs.
did I mention I do an occasional live mix for a few bands? I play canned music between sets and hate it when a band member hands me a pen drive with a poorly encoded MP3 to play - so much money invested in sound equipment only tho have some crummy MP3 make it sound like crud.
oh, and what do bands think about services like allTunes you may ask? The ones I've dealt with love them - they say as long as you pay to hear them live it makes little difference to them but I suspect should the music they sell via CD Baby show up on allTunes they may not appreciate it as they actually do get most of the sale price of their music sold on CD Baby.