We recently added a keyboard player to my band. They keyboard player doesnt have an amp. I suggested that he plug into my low input jack while i stay plugged into the high input jack on my AI Clarus. I am not sure if this is a one channel amp or not. I guess it probably is. Besides losing power that i would have w/o the keys plugged in, is there any possibility of this damaging my amp? I dont mind having less power at rehearsals, but not at gigs. thanks!