Used MXR M103 Octave Blue Box Effect Pedal

Used MXR M103 Octave Blue Box Effect Pedal in fair condition, delivers a unique fuzz and analog sub-octave blend for thick, gritty tones. Features two knobs—Output and Blend—for customizing distortion and octave balance. Produces a distinctive, synth-like sound perfect for experimental or vintage-inspired riffs. Runs on a 9V battery or standard adapter. Shows cosmetic wear but functions properly, offering classic MXR sonic character at a great value for players seeking bold, retro tones.