Updated 13 May 2026
| Brand | MXR |
| Category | Guitars |
| Available at | 1 UK stores |
| 90-day avg | £102.00 |
MXR
MXR M103 Blue Box Octave Fuzz effects pedal
£103.00£121.00↓ 15% offFair Price
Cheapest at Bax · 1 store
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PRICE HISTORY
Current
£104
Change
+20.6%
Avg
£98
Low
£86
High
£105
Volatility
3.8%
PRODUCT DESCRIPTION
- The MXR M103 Blue Box Octave Fuzz is a guitar pedal that produces a truly unparalleled sound. It doubles your signal and gives the copy a dose of distortion-like fuzz, after which it is dropped by two octaves. By way of the blend knob, you can determine the balance between the effects signal and the clean sound. Led Zeppelin&apos
- s Jimmy Page used this wacky MXR pedal back in 1979, in their song &apos
- Fool in the Rain&apos
- ! The unusual M103 Blue Box The famous Blue Box charm stems from the fact that part of its output can throw your amp completely out of whack, leading to the most fascinating distortion-like effects. As such, your sound will vary depending on the amp you&apos
- re using and the situation you&apos
- re in. Using the output knob, you can determine the overall volume of the M103, or you can combine it with a compressor like the MXR Dyna Comp. The Blue Box is powered by a 9V battery, but using the separately available power supply, you&apos
- ll never run out of juice on stage!