Just personal preference. This stereo doesn’t have enough fidelity to notice a difference with anything more than a 3 channel mixer. I have Bass all the way up. Treble 3/4 of the way up and Mid Range a little higher than middle ( just before it starts sounding tinny) I also have the spatial control pulled just a little towards the rear. Just to where you can hear the music move back. The rear speakers are horrible.
