i'm baffled by something that happened the other day when i was playing with some stuff. i'll try to explain what i did and hope you can explain how this happened: a mono signal (from the bass) into a pedal- regular mono instrument cable. "stereo" out from the pedal- two monaural instrument cables, L and R plugged respectively into two separate mono heads. when using headphone out on either head, the signal applied itself to L only (from the left head) and R only (through the right head). what?