The CB/M847 Wah Pedal kit is designed to replace the electronics in any Dunlop Crybaby or Vox V847 wah pedal for more control and better tone and function. New features have been added to the classic circuits: true bypass, a 150kL potentiometer to broaden the sweep range, an optional output buffer, and on board tone controls to tweak the overall sound to your personal taste. Make your standard-issue wah pedal versatile.