New design now shipping...
Based on the Vox Starstream Guitar repeater function popularised by Spacemen 3 and Spiritualized. This is neither Tremelo or Vibrato but a very hard edged downward sawtooth wave repeater. The small knob in the middle allows you to affect the percussion of the wave and the large knob adjusts the speed and lights up and flashes to let you know the rate of repeat. Use it with guitars for a unique choppy trem sound or on keyboards and synths.