OK so, just now, the right side of the input - both the guitar input and mic, (set up w/ an adapter and "leveled") works, all fine and dandy, then stops working. No sound. Everything else is working. All outputs are coming out stereo. Programs are running. Shut off the unit, power up, everything's fine. Then, just stops coming out of the right side. So it's not the jack (I read previous posts), because when I encountered the problem, I switched to an adapter for the mic input, and switched inputs on (in) the program. Right side - nothing. Shut it off, turn it on. It comes back. So anyone encounter this little glitch?