Stereo inputs and a balance, and fx loops for them. Really I just want two preamps, but with an option to go to a single output. Oh, I'd like coupla bands of sweepable mid, and sweep quite low on it. Hmmm, I'd like a drivey side to be responsive to volume and how hard you play like a guitar amp, but again, probably not of interest to most, just trying to find a pedal that does it is what I really need.