I had the opportunity to play through one of these (the 15" combo version) that belonged to another band at a gig this evening. I'd have to say that's the loudest 150 watts I've ever heard from a bass amp. I was running sound for the band that owned it, and I had to yell at the bass player to turn down repeatedly. Of course, when my band's turn came up, I cranked that mutha . In what I would say was a medium-size club, it cut through (more like drowned out) a Peavey Delta Blues and a Yamaha 100-watt 12" combo without any trouble. I'd say it seemed a little more powerful than the rig I used last time I played that club, an 80's SVT on a Peavey 810TVX. It put my little yamaha preamp/poweramp+aguilar 112 rig to shame. I'd say the sound was a little "boxy", and not the warmest tone in the world, but a sansamp BDDI would probably help it in that respect. Any other opinions on this amp?