Used MXR M103 Octave Blue Box Effect Pedal

The Used MXR M103 Octave Blue Box is in great condition and delivers a unique blend of fuzz and down-octave tones. This analog effect pedal generates a fuzzy distortion and doubles your signal two octaves down, creating a gritty, synth-like sound. It features simple controls for Output and Blend, letting you dial in the perfect mix of fuzz and octave effect. Rugged and compact, it’s perfect for guitarists seeking vintage, experimental tones.