I just got my M-Audio ProKeys88 last night, and I ran it stereo into Ch 3 &4. (haven't tried it mono). I ain't a keyboardist, but the sound is incredibly amazing. Everything but the Hammond B-3 sounds perfectly realistic to me right out of the box. I'll see if I can still do vocals & guitar through the one PAS, otherwise I'll be selling my other gear for another PAS. I'll be trying your suggestion and tweaking the B-3 this weekend. Maybe there's a suitable preset.
