Here are the major features of the pedal (see the manual for more details): 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: You can speed up or slow down the tempo by holding the tempo switch down. Optional External Tap: Use as a Tap IN, or a Tap Out. Stereo Output: Selectable by an internal jumper, change this pedal from a mono output to a stereo output. Changes from previous versions: Stereo output added. Optional External Tap In, or Tap Out. Bank switch moved to top. Live/Preset switch moved from internal to top.