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MXR M225 Sub Machine Octave Fuzz Pedal

Fuzz/Octave Guitar Effects Pedal with Independently Switchable Octave Up Effect and Parallel/Serial Switch for Octave Down Fuzz Processing
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Item ID: SubMachineFuzz
MXR M225 Sub Machine Octave Fuzz Pedal
Price:$199 and 99 cents
Special Financing - Ends Aug 2, 2026. $34.00 suggested monthly payments with 6 month financing*

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MXR M225 Sub Machine Octave Fuzz Pedal
$199.99
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MXR M225 Sub Machine Octave Fuzz Pedal
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Price:$199 and 99 cents
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This article was Written By

Our Product Research Team

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Satisfying Fuzz Meets Killer Octave Effects

Unleash waves of frothy, shaggy fuzz tone with the MXR SubMachine guitar effects pedal. It's the perfect combination of the La Machine Fuzz with MXR's tried-and-true sub octave circuit - just what you need for absurdly heavy tone. Dial in the ideal fuzz and even kick in an octave up when the mood strikes you via a dedicated footswitch. The actual Octave control puts the sub in SubMachine, allowing you to roll on as much sub-octave thickness as you like. What's more, the SubMachine includes a Series switch, which lets you run the sub octave either through the fuzz effect or keep it clean by running it parallel. If you dig the Blue Box the way many of us at Sweetwater do, then you're going to love the SubMachine.

MXR Sub Machine Octave/Fuzz Guitar Pedal Features:
  • A brilliant combination of the MXR La Machine Fuzz pedal with sub-octave circuitry
  • Separate volume controls for main volume and sub octave let you dial in an ideal mix
  • Series switch toggles wether sub octave signal goes through the fuzz circuit
  • Octave footswitch kicks fuzz signal into octave up mode for a wider tonal spread
  • True-bypass switching preserves signal when effect is off
Get massive fuzz and glorious sub-octave growl with the MXR Sub Machine!

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Tech Specs

  • Pedal Type: Octave Fuzz
  • Analog/Digital: Analog
  • Controls: Volume, Fuzz, Sub, Series switch
  • EQ: Tone Control
  • Inputs: 1 x 1/4"
  • Outputs: 1 x 1/4"
  • Bypass Switching: Buffered Bypass
  • Power Source: 9V DC power supply (sold separately)
  • Power Usage: 7mA
  • Batteries: 1 x 9V
  • Height: 1.5"
  • Width: 5"
  • Depth: 3.75"
  • Manufacturer Part Number: M225

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Reviews

Great sub and octave fuzz
This pedal sounds so mighty and tracks beautifully. I love it!!!
Music background: Professional musician, composer, producer
The devil comes in different shapes!
I got this for my bass. I think I almost opened a portal to the underworld!
Boom!
Well, this little beast is crazy good. I love The octave up/down features and the fact the fuzz is optional. Sonically, it's awesome and well worth the price. On top of that, my Sales Representative, Connor Smith was informative, helpful, and went out of his way to make the purchasing experience at Sweetwater... the bomb!
Music background: Various forms of rock and roll.
Super solid fuzz
This pedal covers a lot of ground, from heavy doom fuzz tones to dani California lead tone when paired with a wah to rival sons huge octave fuzz sounds. It's a mainstay on my board and probably will be for a long time.
Does exactly what it says it does
I got this pedal to make the sound it makes. A refined fuzz tone with a lower octave and the ability to bring in a higher octave. When I want my music to have that sound of "extra" to it, this thing delivers. It's riff inspiration. It's got the kind of fuzz that could easily be used for other instruments as well. I would love to hear a sax, keyboards, etc, doing single line work through this piece. Is it the ultimate fuzz tone? No. But there are other pedals for that. It does exactly what it's supposed to the way it should. Definitely more classic rock than LoFi indie or experimental.
Music background: Guitarist, singer, songwriter, pro/am, dork.