I have two of these with my organ and piano, works well also with acoustic guitar, hollowbody also works well. Plenty of volum, but not as much as they say, is it 600w they say? Anyway, no problem to be heard in rehearsal with the band. Nice that you can link them for stereo, gives a nice sound for pads on my rd88, and Leslie sound on my organ, nice effects onboard also.
Update after a few months; both these amps got a problem when they get warm, they start producing a loud white noise, must turn them off to let them cool down. Got them returned, wouldn't take the chance of the same problem again, so I chose something else instead, disappointing.
But thanks to thomann for their excellent service when you get problems with their products, couldn't been better👍