Electro Harmonix Pitch Fork Polyphonic Synthesizer-GeneratorThe Pitch Fork transposes an instruments pitch over a + three octave range and features three modes which allow the pitch to be transposed up, down or both, simultaneously. The pitch shift amount can be set to a fixed interval or continuously varied by an expression pedal or control voltage. The controls are straightforward and intuitive. An 11 position Shift switch selects the maximum transposition interval ranging from D (Detune), a shift of 17