The Toolblox Dual Expression Pedal takes a pedalboard staple and soups it up with a host of new functions that Source Audio is known for. Built with attractive features like an adjustable expression range knob, dual TRS outputs for simultaneous controls on multiple effects, and a roughneck aluminum chassis, the Dual Expression double up on reliable effect control whether you're going for a wah or flanging out. Top it all of with direct Sensor Output connectivity with any Source Audio pedal for complete control over your effects kingdom.