The EHX Expression Pedal is part of our innovative Next Step Effects series. It does not use a potentiometer, optics or magnetism to sweep expression-enabled controls. The result is a responsive expression pedal that provides precise control over your expression or control- voltage capable effects and instruments. Expression / CV Pedal. Exceptional control, plus instantaneous bypass switching that is completely silent. Increase or decrease the expression sweep range with the Range dial. Reverse the direction of the pedal’s output with the Reverse control. Comes with a 6’ long 1/4 ” TRS cable. Ultra rugged. No footswitches, gears or rack to break. Battery included, 9Volt power supply optional.