I had one once and used it for modeling. I didn't like it. I'm not totally satisfied with my Tech21 Power Engine, but the Power Engine was SO much better to my ears than the Roland KC keyboard amp. To my ears, the KC sounded like it had a blanket over it compared to the PE.
At the time (this was like 10 years ago) I was running a VG-88 through it.
Wow. The overall opinion I'm hearing is avoid this amp. Thanks!!! I'm hoping to find a cheaper way to run my 11 rack as a rig until my number comes up for the axe 2. I don't want a full FRFR setup yet since the costs have to be managed over the next year for my rig.
The Alto's are $299, and sometimes end up on HelloMusic.com for somewhere around $225 (well they have twice so far). Go check out the thread on the Fractal Audio amps and cabs forums. Its a little coax speaker in a wedge cab. It does have issues (what do you expect for the price), but it also compares favorably to some powered monitors that cost more than twice that (opinions being subjective and all). Can't remember the model number. Just search that forum for Alto or hellomusic.com