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 Tender Octaver Mk Ii Precise Octave Pedal True Bypass Switching Guitar Pedal - Guitar Parts & Accessories - AliExpress