The Cusack Music Tap-A-Whirl V3 is the world's first analog tremolo pedal with Tap Tempo built in. Now with 24 waveforms, stereo out, and tap jack! * Tap your foot twice on the tempo switch to set the tempo. * Choose from 24 predefined wave forms, including sine, ramp, blip, bleep, square, waver, echo and ping pong. * Adjust the depth of the tremolo. * Brake Speed up or slow down the tempo by holding down the tempo switch. * External Tap Use as a Tap In, or a Tap Out. * Stereo Output Selectable by an internal jumper to change this pedal from a mono output to a stereo output. Changes from previous versions * Stereo output added. * External Tap In or Tap Out. * Bank switch moved to top. * Live Preset switch moved from internal to top..