One thing I'd like to add to the MB201P part of this discussion, several people have complained about the tweater in the MB combos. Personally I don't hear anything about them that bother me and you can always roll off the high end a touch if the top is too shrill for you. Personally, beside my basses I also push multi-keys through my MB201P (keys and bass guitars into a 16 channel Carvin mixer then into the combo amp and the front end system) because i'm also the keyboard player in my band (I play left hand synth bass parts when i play keys) and one thing i love about the MB102P is not only do my basses sound great, the KEYBOARDS also sound great. When I play left hand keyboard bass with right hand piano, strings, horns (what ever) at the same time ALL the sound is there. It doesn't sound like I'm playing keys through a small bass amp, all the sounds including the bottom end sound natural and distinct and don't over tax the amp. And that's at full stage volume with a class rock band. That in and of itself is mind blowing. I actually stopped bringing my keyboard amp to gigs. I now send the bass and keys separetely from my mixer to the front end and send EVERYTHING into the MB102P through my mixer's monitor output for my stage monitor. Amazing little amp!