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TC Electronic Sub 'N' Up Mini Octaver Dual Octave Pedal – GuitarPusher
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Guitar Pedal X - GPX Blog - 9 of the Best Octave Pedals for Your Consideration
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Amazon.com: Koogo Guitar Octave Digital Pedal Octpus Pedals for Electric Guitar Precise Polyphonic Octave Effect Generator Pedals With No Distorted Sound : Musical Instruments
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