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Electro-Harmonix POG2
Features
True bypass polyphonic octave generator guitar effects pedal
Totally programmable 8-preset memory with instant recall
5 mixable polyphonic octave harmonics
Attack delay slider controls the fade-in speed of the octaves
Lowpass filter with selectable Q
Dry signal can be routed through the Attack, LP, and Detune faders
Flawless polyphonic glitch-free tracking
Can be daisy-chained with other pedals and power supplies