From Cusack:
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!
A smooth, pristine tremolo effect, with the added benefit of tap-tempo. It can even be used in stereo for ultra-wide soundscapes.
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.