Update on mine, used at volume yesterday in band practice, awesome, I like my Terror 500 but this thing blows it away, it seems to have so much more of everything including volume, the speakers in my Dubster were plainly moving much more than when I play with the Terror Bass. I don't suppose for a minute it'll be everyone's amp, but I'd say to anyone playing rock, metal or punk check these if you're in the market for a new head.