The Electro Harmonix Pitch Fork is a unique and powerful pedal that can shift your pitch over a +/- three octave range. It features three modes that allow that new pitch to be transposed up, down, or even both at the same time! The pitch shift amount can also be set to a fixed interval or varied, with an expression pedal! This pedal is similar to the Digitech Whammy, in a smaller package, and from EHX, the pedal kings!