I recently got one but have only practiced with it. I'd compare it to the new Ag500, EA iamp500, or ampeg's new digital amp. Can't remember the model number. It's got 5 presets that can be switched via midi pedal and 6 more models set manually. At $600 I figured to be a pretty good buy compared to the aforementioned. I'm still coming up with cab $$ but I'm thinking either the matching Yamaha bass cabs or a pair of EA wizzy 112's to get the most out of this amp. Yamaha doesn't give specs for the cab's other than the 1-10,2-10, and 4-10 cab's each are 4 ohms. No frequency rating, sensativity, ???