![Amazon.com: Donner Octave Guitar Pedal, Harmonic Square Digital Octave Pedal Pitch Shifter 7 Shift Types 3 Tone Modes Sharp Detune Flat True Bypass : Musical Instruments Amazon.com: Donner Octave Guitar Pedal, Harmonic Square Digital Octave Pedal Pitch Shifter 7 Shift Types 3 Tone Modes Sharp Detune Flat True Bypass : Musical Instruments](https://m.media-amazon.com/images/I/61esYQXbG4L.jpg)
Amazon.com: Donner Octave Guitar Pedal, Harmonic Square Digital Octave Pedal Pitch Shifter 7 Shift Types 3 Tone Modes Sharp Detune Flat 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: BOSS Oc-5 Octave Guitar And Bass Effect Pedal with Vintage And Poly Modes Plus 5-Year Warranty : Musical Instruments](https://m.media-amazon.com/images/I/517tkwtUTXL.jpg)
Amazon.com: BOSS Oc-5 Octave Guitar And Bass Effect Pedal with Vintage And Poly Modes Plus 5-Year Warranty : Musical Instruments
![TC Electronic Sub 'N' Up Octaver Dual Octave Pedal - ranked #24 in Harmonizer & Octave Effects Pedals | Equipboard TC Electronic Sub 'N' Up Octaver Dual Octave Pedal - ranked #24 in Harmonizer & Octave Effects Pedals | Equipboard](https://images.equipboard.com/uploads/item/image/38136/tc-electronic-sub-n-up-octaver-dual-octave-pedal-xl.jpg?v=1699928132)