Amazon.com: MOOER Tender Octaver Pro, Stereo Octave Pedal with Adjustable between unison and +1/-1 octave Make Your Harmonization, Pitch Shifting, Whammy and Detune Chorus Effects : Musical Instruments
MOOER PURE OCTAVE PEDALE EFFETTO OCTAVER A PEDALE PER CHITARRA
Boss OC-5 Polyphonic Guitar/Bass Octave Pedal | Sweetwater