Octave Divider

Mu-FX Octave Divider

The Mu-FX Octave Divider retains all the versatility and accurate tracking of the original Musitronics Mu-tron Octave Divider pedal, but now in a “mini-Mu” housing that has the authenticity of the original in a pedal-board friendly size. It includes the same Octave Down effect and Green Ringer that made the original Octave Divider so popular with Jerry Garcia, Frank Zappa, Chris Squire, Larry Graham and others. Made in the USA with modern manufacturing techniques, the enhanced reissue offers more versatility of operating modes and features.



  • TONE varies the tonal “brightness” of the octave-down effect
  • BASS adjusts the volume of the octave-down (BASS) circuit in Effect mode
    • Unity gain is at approximately 8 on the dial
  • DRY adjusts the volume of the instrument input signal in Effect mode
    • Unity gain is at approximately 8 on the dial
  • RINGER adjusts the volume of RINGER output signal in Effect mode
    • Unity gain is at approximately 8 on the dial
  • STABILIZE switch improves the reliability of tracking of the octave-down effect for guitar and other plucked instruments
  • SOLO SEL switch is used to select whether BASS (octave-down only) or RING (RINGER only) will be activated by the SOLO footswitch
  • EFFECT footswitch  switches between EFFECT (Purple LED) and BYPASS (Red LED) output
  • SOLO footswitch activates the effect selected with the SOLO SEL switch (Effect Off – Red LED/BASS – Blue LED/RINGER – Green LED)


  • 1/4″ True Bypass Switching Input Jack
  • 1/4″ Active Bypass Switching Input Jack
  • 1/4″ Output Jack
  • Signal to Noise Ratio: 85dB or better
  • Input Impedance: 390K Ohms
  • Nominal Input Level: -10dBu
  • Output Impedance: 150 Ohms
  • Nominal Output Level: -10dBu
  • Maximum Output Level: +16dBu
  • Case: 2mm aluminum
  • Weight: 16.3oz/462g (unit only)
  • Dimensions: 5.65” x 4.05” x 1.625”
  • Includes 12VAC 200MA adapter
  • 1 year limited warranty
  • Made in USA to ISO 9001 standard

Included in the box:

  • Octave Divider
  • 12VAC power supply
  • Manual


Duties and Taxes: Import duties and taxes are not included in the product price or shipping and handling cost and it will be collected upon delivery from the carriers for certain packages. These charges are recipient’s responsibility as we are only charging the transportation fee for the packages. You may check with your country’s customs office to determine what these additional costs will be.

Reviews & Demos:

Premier Guitar’s Joe Gore: Octave Divider Review

The Bass Hang’s S. Araujo Demo

Gearmanndude’s Demo

Paul Provosty Sound Clips

[All examples have the STABILIZE switch turned off, the guitar is plugged into the ACTIVE IN input and the amp’s used are digital models in NI Guitar Rig 5 – primarily “Fender Clean.”]

“Lowdown Ringer Funk”

Audio Player

“Phat Boy”

Audio Player

“Pinchy Ringer Fuzz”

Audio Player

“Ring Your Sorrows Away”

Audio Player

“Stevie Bass”

Audio Player

“Page’s Nightmare”

Audio Player

“The Hulk”

Audio Player