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More: MXR | Effect Pedal

MXR Blue Box Fuzz Pedal

Fuzz pedal with sub-octave effect and precise mix controls |

Item ID: M103


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The MXR Blue Box is a buzzing fuzz and octave pedal that is unmistakable and unapologetic. Creating a completely unique sound, the Blue Box utilizes a mix of a buzzing sub-octave effect and gated fuzz effect that share a single blend knob. The control knob can be used to dial in to isolate either effect or dial in a mix between the two, making for a pedal that is more flexible and customizable than seen at first glance. With a sub octave voice that borders on a synth sound, the MXR Blue Box can tune into an 8-bit effect that is compatible with glitchy, synth-heavy sounds. The MXR Blue Box is a unique and fuzzy stompbox with a voice reminiscent of synthetic, digital buzzes of decades before to suit the needs of the modern player.

Controls & Highlights

  • Fuzz and octave combination effect pedal
  • Responsive Output and Blend controls
  • Aggressive fuzz tones to 8-bit buzzes
  • Powered by 9 Volt DC Power Supply


Type: Fuzz / Octave
Power Supply: 9 Volt DC Power Supply
True Bypass/Buffer: Buffer
Ins - Outs: 1 in / 1 out
Expression Out: None
Battery Connection: Yes