The Electro-Harmonix Stereo Pulsar delivers beautiful vintage vibrato, destined to cascade your tone to new sonic heights! Expect undulating tremolo and panning that's perfect to fill out and add dimension to your sound both on stage, and in the studio. A switch lets you select between vintage triangle or square waves so you can sculpt the right sound for each song - plus, you can shape control transitions from negative to positive saw tooth, and even adjust the pulse width for the ultimate in sonic control.