Electro-Harmonix POG2 Polyphonic Octave Generator Guitar Effects Pedal The Electro-Harmonix POG2 effect pedal is a polyphonic octave generator that lets you conjure up everything from the surreal jangle of an 18-string guitar to rich, thick walls of symphonic sound. It features an Attack control that enables you to fade in lush, smooth swells. It also features a second sub-octave to reach deeper than ever before, a 2-pole resonant low-pass filter that includes two additional Q modes, and an enhanced detune to refine your sound even further. The POG 2lets you save your favorite settings and recall them with a single click. Its enhanced algorithm delivers a focused and in-the-pocket harmonic performance. All this is packed into the Electro-Harmonix POG2's rugged and pedalboard-friendly die-cast chassis.