The MXR Blue Box became the go-to octave effect and a gear icon after Jimmy Page used it for his solo in "Fool In The Rain." It's incredibly simple - two knobs for Output and Blend - one of those pedals that just does its thing and sounds good without a ton of dialing in. It tracks your notes and doubles with a two-octave down copy, providing a bassy, raw feel. Put it front of a fuzz and stand back.

Product Specs

  • M103 Blue Box
  • Blue
  • 2010s
Made In
  • United States

From the Price Guide

Reviews for the MXR M103 Blue Box Octave Fuzz Pedal
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  • Intense and motivating alone. Powerful and inspirational with allies.

    Verified Purchase

    Everyone has beat me to it already. "Simple pedal. 2 knobs, 1 volume, 1 tone mix. One trick pony." All these things are true, but this pedal is capable of so much even with it's limitations. If you're a noise musician. Turning the volume up clockwise and the tone knob fully counter clockwise while …

    1 person found this helpful

  • Fat Sound and Huge Fun!

    Verified Purchase

    I've loved the tone of this pedal since I first heard Jimmy Page's solo in "Fool In The Rain". I'm happy to say that it hasn't disappointed. Very simple to use. Just two knobs. I was able to dial in the sounds I was looking for right away before I even looked at the manual. The Blue Box produces …

  • Legendary.

    Verified Purchase

    Not meant to be a versatile fuzz pedal, but definitely more than just a one trick pony.

  • Simple and Cool

    Verified Purchase

    Such a simple pedal. 2 Knobs, 1 is volume, the other controls the mix of 2 octave synth components. It seems like there’s not a lot going on, but there are, say, 5 fairly distinct sounds going on with the mix knob at min, max, middle, and in between. What’s interesting is how it goes from “low syn…

  • MXR Blue Box great experience

    Verified Purchase

    reverb had the MXR Blue Box listed as mint condition but when I received it I was suprized because when I opened the original MXR box the pedel was still in the original plastic never opened. It was beyond mint condition it was like getting a new pedel. I would recommend reverb.com to anyone who is …

More Information

Years of Production: 1972 - 1978, 1995 - present

Notable Users: J Mascis, King Buzzo