It is a longtime coming - my rig is complete and it kicks. Avatar B2x10's and B112, Demeter VTB tube preamp, and QSC PLX 1202 amp. I have had the Demeter for years and use it for DI to main boards and some studio work. The Demeter is very clean. Initially I ran the cabs parallel but changed to bridge mono. This produced more power (at less gain) and no amp clipping. The cabs have excellent tone and full range that cut thru other band instruments/vocals. That is what I have been lacking. Previous amps did not have the mids that I was satisfied with. The low B is solid but not boomy like an 18". The tweeter on the 10" is noisy/hiss, and I turned it down to about 1/4. This works fine. The tweeter in the 12" cab much less noisy and has no hiss. Are the tweeters wired different in the B210s and B112s? I have played thru Carvins, Fender Basemans, Ampegs, Peaveys, and Eden. The Avatar is a good bang for the buck, and I am . Carvin tens lack good clean mids. Thank all TalkBass users for the reviews this played and important part in my rig decision.