SC6000 sound quality concerns

Not that I can tell. You could just play sparser, easier to process music. Analog mixers, tubes, and transformer distortion may help cover it up, or they might push the distortion past a noticeable threshold of detection for you. YMMV. Or you can just go nuts with the key change since it’s already pretty mucked up by default to begin with. Using hi res lossless files and no key lock, though, will allow the players to output the best sound they are able to currently produce without further improvement of the firmware audio processing, but that’s pretty constraining for the DJ, and even then they’re basically like playing an MP3 on most other brands. In for a penny, in for a pound, so I say if you’re living with Prime, then enjoy the features.