I run the bass wide open. Then tweek the amp. If I want more volume I just turn up my power amp. I do roll back the bass or treble boost just a bit if I need to on the bass. Nothing like hitting a knob on the bass and not being able to figure out what changed on stage. That's why I run them full up or close to it. After that it's pretty much set n forget on the amp too. I don't change mu tone much.