Used MXR M103 Octave Blue Box Effect Pedal

Unleash massive, synth-like fuzz with this Used MXR M103 Octave Blue Box in Good condition. This iconic analog pedal combines a gritty fuzz with a two-octaves-down subharmonic for crushing riffs, doom tones, and wild lead textures. Simple control layout lets you blend the octave and set output level fast. Rugged MXR chassis is stage-ready, runs on standard 9V power, and features true bypass switching for a clean signal when off.