Set your phasers for stun, gang! Rocktron brings you the Reaction Phaser, a classic phaser pedal that will add a great effect to your arsenal. Rocktron’s Reaction Series pedals are built into a rugged metal slim form factor chassis, taking up as little space as possible on your pedalboard. The Reaction Phaser is a TRUE BYPASS pedal: when you turn it off…it is out of your signal path! The Reaction Phaser is very easy to use. Just set the SPEED control and off you go. The SPEED knob controls the speed of the modulation waveform. Simple!