The TC Electronic Helix Phaser Pedal is a versatile and advanced 3 mode pedal that delivers a range of professional phaser tones to suit a range of playing styles. Featuring on board speed depth feedback and mix controls to allow fine tuning and tweaking the TC Helix Phaser also features innovative TonePrint compatibility which allows you to further extended your phaser tones through the free iOS/Andriod app or downloadable software.