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Electro-Harmonix Octavix Octave Up Fuzz Guitar Effects Pedal w/ 9V Power Supply

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Irin Instrument Talent Octave Guitar Effect Pedal with True Bypass - New in Box

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Electro Harmonix Nano Pog Polyphonic Octave Generator Effects Pedal Guitar

Electro-Harmonix Nano POG Polyphonic Octave Generator Pedal with Power Adapter