Amazon.com: MXR M288 Bass Octave Deluxe Effects Pedal Bundle with 4 MXR Right Angle Patch Cables : Musical Instruments
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