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TC Electronic SUB 'N' UP MINI OCTAVER Compact Version of Hugely Popular Sub 'N' Up Octaver with Advanced Polyponic Octave Engine and TonePrint-Enabled Technology for Easy Custom Effects : Musical Instruments - Amazon.com
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Amazon.com: Mooer Polyphonic Pure Octave Effect Pedal w/ Power Supply : Musical Instruments
Amazon.com: TC Electronic NETHER OCTAVER Classic All-Analog Octave Pedal with 1 or 2 Octaves Below Original for Adding Warm Deep Bottom End : Musical Instruments
Amazon.com: pigtone PP-29 Guitar Effect Pedal Octave Fuzz Analog DC 9V True Bypass : Musical Instruments
Amazon.com: BOSS Oc-5 Octave Guitar And Bass Effect Pedal with Vintage And Poly Modes Plus 5-Year Warranty : Musical Instruments
Amazon.com: TC Electronic NETHER OCTAVER Classic All-Analog Octave Pedal with 1 or 2 Octaves Below Original for Adding Warm Deep Bottom End : Musical Instruments