This Dual Expression Pedal is compatible with Source Audio and third-party pedals alike. It sports two passive 1/4" outputs, one on either side of the pedal, each with its own independent circuit. Additionally, a 4-pole 3.5mm sensor output is provided for use with Soundblox, Soundblox 2, Soundblox Pro, and Hot Hand pedals, giving you real-time foot control over various parameters of various pedals. A 50-kOhm potentiometer has been placed next to output 2, and adjusts its range. With this smooth-action pedal, cast in its durable aluminum housing, you can control more than one pedal at a time.