MarkBass MoMark SD800 $400 shipped OBO 800W @ 4 ohm 450W @ 2 ohm Has a bit of wear, and the top has a crack from an over tightened screw. Plugged it in for the first time in a while on Wednesday, and forgot how loud it is! Used it at practice for a few hours and it still sounds great. I don't know much about the modules other than they sound good. Super helpful, I know.