Warm Audio's recreation of this classic 1970s effect brings all the swirl, swoosh and sweep of the an iconic phaser effect to modern guitarists. Updated with true-bypass operation, this super authentic recreation of the classic design favored by guitarists, bassists and keyboard players alike, brings you all the sound and vibe of vintage units without the vintage price. Combining deep and shallow phasers with fuzz tones recreates that classic hypersonic jet swoosh for some serious sonic fun. The Fast/Slow footswitch has a ramping effect for a rotary speaker-type operation, and the resonance control lets you go from subtle to over-the-top with the twist of a knob. Runs on two 9V batteries or the included 18V power supply.