https://www.youtube.com/watch?v=sOnYVPJvpCo Product Information: You're going to love rocking out with this Behringer Vintage Phaser VP1 effects pedal. Traditional to the core, the VP1 gives you just a single rate knob plus a very cool Tone switch, which lets you invert the polarity of the effect. The effect of flipping the VP1's Tone switch lets you take it from a more traditional phaser to a more lush, almost vibrato-like effect. Product Features: Warranty period: Three (3) Years Phaser Dial in authentic and classic 3-dimensional phase shifting effects Dedicated Rate control offers a range from rapid rotary speaker to impressive jet plane effects Tone switch provides negative and positive feedback modes for more or less detuned sounds Runs on standard 9V battery or optional power supply for full pedalboard integration True-bypass switching preserves your tone when the effect is off For more information and specifications, please refer to the manufacturers website
