Check the listing for details. Electro-Harmonix Dual Expression Pedal - Dual Output. Condition: New. Listed at 90.70 USD. Control Two Effects Simultaneously If you're the kind of guitarist that likes to create movement in your effects while you perform, there's a ton of creative potential in the Electro-Harmonix Dual Expression Pedal. Each of the two expression outputs features its own range and reverse controls, allowing you to fine-tune how each output controls the connected device. A polarity switch ensures compatibility with practically any expression-capable pedal or synth. Use it to open up a filter pedal while increasing feedback on a delay pedal, increase the rate of a phaser while you decrease the depth of a reverb, or any other creative combination you can think of. If you want an expression pedal with creative flexibility, Sweetwater can highly recommend the Electro-Harmonix Dual Expression Pedal.