500w, for bass&pre GP11Single input, switchable 12 band EQ, crossover and 2*250W poweramp. Transformer-DI, switchable pre/post EQ. Line in/line out for master-slave-use. Effects loop. Powerful enough, sure, anytime ! And as a bonus it has a "black-light"-tube on the front making it glow in the dark !!!
It's quite versatile with pre-gain, volume, and individual volume for each of the power-amps, so there is a lot of knobs to set right. The pot's are all dented, so it is really easy to use anyway. And it is very quiet, so however You set it the noise-level is not a problem. A foot-pedal to switch the effects-loop in/out would be a nice addition !
The head is built in a very sturdy, quite heavy box, and it can take a lot of abuse without being damaged. The front and back-panels are recessed so the controls and connectors are very well protected even during use. Had it for a while, and no problems so far (knock-on-wood)