Electro Harmonix BM-WICKER Big Mu Pi w/Tone WickerThe Big Muff Pi with Tone Wicker takes the most famous fuzz pedal in the world and adds new tone shaping capabilities. On top of the familiar controls, the Big Muff Pi with Tone Wicker boasts two switches: Tone and Wicker. The Wicker switch opens up three high frequency filters, adding top end bite. Very cool! The Tone switch disengages the Tone control from the circuit, resulting in a full frontal Big Muff assault like none you've ever heard!