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The MXR M103 Blue Box Octave Fuzz is a legendary guitar effects pedal that delivers a distinctive combination of aggressive analogue fuzz and a powerful signal two octaves below your original note, creating huge, synth-like bass tones and chaotic, glitchy textures. Featuring simple Output and Blend controls, it allows players to mix the sub-octave effect with the original fuzz signal for everything from subtle octave enhancement to wild, experimental sounds. Housed in MXRs rugged metal enclosure and powered by a standard 9V battery or compatible power supply, the Blue Box has become a cult favourite for guitarists seeking bold, unconventional tones with unmistakable vintage character.
