NEW smaller version !! Has now the size of an standard pedal. The Sixties Vibe is an exact rendition of the original Univibe pedal which uses 4 photocells surrounding a pulsating light source to deliver its very unique and recognizable sound... Thick chorus/vibrato type of effect starting off with a slow watery type swirl gradually becoming more 'alive' as the onboard speed knob is manipulated counter clockwise resulting in a 'machine-gun' type warble around the 9 o'clock setting. An excellent choice for all the Hendrix / Trower / Floyd fans out there! Runs on 18 Vdc.