I'm looking for a new power amp for my rig. I'm using an Ampeg SVP-Pro preamp. At first I looked at Crown (Ce 1000) and then saw some bad posts about the lower line Crown amps plus there were no limiters built into them. Mackie started looking better, but a sales person at Guitar Center said that he's had thermal problems with Mackie and that he wouldn' recommend the line. He liked QSC products. When asked about Carvin, he said that Carvin wasn't professional.......(I'm not sure what that means). I looked at Crest but didn't see a lot of experience on this board in a bass rig. Carvin seems to be a good deal. I'm looking at a DCM 1500. Does anyone have real life gigging experience with the Carvin?