I'm still not satisfied with Chipcrusher unfortunately. I've been mostly using DMG-01 and GBA_clam with the bits set to 16 and the resample rate pretty high. I've turned off the noise. The result is ok, but it still doesn't make high quality sounds sound like something you'd hear on a SNES. Even when I put the high quality sound through a sampler to remove the realism that Kontakt adds through round robin techniques and stuff.
And sandneil, I attempt to do what you were talking about in audacity but for some reason the wav file became unusable (at least in c700) after I lowered the bit rate. Any clue why that might be happening?
Any other ideas? I wish it was possible to access the exact thing that the game makers were running samples through because I can't seem to find anything that's as accurate as I'm looking for. :c