The Boss PS-2 Pitch Shifter guitar effect pedal offers digital delay and pitch-shifting effects that warp notes and chords to create sound on a whole new musical dimension. This guitar pedal pitch shifter has the ability to change the pitch one octave up or down with an added delay effect for up to two seconds. Adjust your sound to fit the moment thanks to the six different modes featured with this versatile Boss pitchshifter guitar pedal, including the manual pitch shift, plus one octave, minus one octave, 125 ms, 125 ms, and two second pitch shift and delay modes. Complete control is achieved through feedback, balance, mode, and fine-manual modes through the easy-to-use control knobs.