The classic Mutron Bi-Phase has the capacity to be a foot-swept phaser by using a 5v peak to peak control voltage pedal. The problem is, you can only attach either the original footswitch or the original control pedal to the Bi-Phase, not both. Plus, the original control pedal is difficult to find and is expensive when you do. RonSound comes to the rescue with the Super Bi-Phase Footswitch! It replaces the original footswitch and has a rear-mounted jack to attach any 5v peak-to-peak control voltage pedal using a 1/4" jack. LEDs are also installed to indicate which phaser channel is currently on. No batteries required as all power is drawn from the main unit.
Complete with 8' non-detachable cord.

Unit size: 4.40" X 2.38" X 1.22"