SpritesMind.Net

Here's the samples (Sonic 3 competition screen) :

Unmodded early MD1 without TMSS (headphone jack) :
http://www.hot.ee/tmeeco3/MD1SOUND.OGG

MD2 with Crystal Clear Audio Mod :
http://www.hot.ee/tmeeco3/MD2SOUND.OGG


I would say, that MD1 YM2612 is 9 or 10 bits while MD2 YM2612 is 12 or more...
I'll do lot more experimenting on this. I have 2x such MD1, which of 1 stays nearly unmodded, and with other I will be trying to CCAM it, so far, not succeeded getting audio as good as from my MD2, discrete YM2612 has much lower output levels...

Here, I finally got to use the better equipment at the music studio here, and this is what I got. On the "star" sound, the equipment says it's 9-bit, though this machine hasn't been calibrated for the Genesis, it may be off.

http://blackevilweredragon.spymac.com/gensound/1.ogg

http://blackevilweredragon.spymac.com/gensound/2.ogg

http://blackevilweredragon.spymac.com/gensound/3.ogg

http://blackevilweredragon.spymac.com/gensound/star.ogg

http://blackevilweredragon.spymac.com/rings.ogg

And there does appear to be stereo separation issues, when using this more HQ recording equipment, on the rings, as you mentioned.