MXR M306 Poly Blue Octave

£219.00 In Stock

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MXR M306 Poly Blue Octave

RRP £244.99 Save £25.99


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Manufacturer's ID: MXR-EFX-M306

What we say:

At A Glance:

The MXR M306 Poly Blue Octave is an expanded octaver pedal that offers polyphonic octave shifting and combines it with fuzz and modulation for huge tones and unique effects.

Features We Love:

Going Down

The pair of Sub controls allow you to blend in a mix of your signal one octave and two octaves down. It's that rich bassy octaver sound we all love and can even be played polyphonically for fat chord tones.

Going Up

The pair of Oct controls let you blend in your signal one and two octaves up. When used with the Sub mixed in it creates a wide sound or used on its own or with the dry signal gives a beautiful chiming sound that can also be used polyphonically.


Activating the fuzz switch brings the pedal into Blue Box territory, tapping you into that classic octave fuzz sound.


The Poly Blue Octave can also be used for a stunning modulation effect that can create a sense of motion. Dialling in the Mod control takes you from a swooping Phase 90 like tone up to a whirring rotary speaker sound.


Connecting a footswitch to the Expression input brings additional possibilities to the Poly Blue Octave and lets you scroll through and toggle parameters on and off.


  • Advanced polyphonic octave shifting
  • Awesome fuzz tones
  • Unique modulation effects



  • EXP jack allows use of expression pedal or tap switch to control certain parameters
  • DRY knob adjusts output level of dry signal
  • FUZZ switch toggles fuzz effect on/off (blue LED indicates on)
  • SUB-1 knob adjusts output level of signal shifted one octave down
  • MONO switch toggles between monophonic and polyphonic pitch-shifting modes (red LED indicates monophonic mode)
  • SUB-2 knob adjusts output level of signal shifted two octaves down
  • OCT+1 knob adjusts output level of signal shifted one octave up
  • OCT+2 knob adjusts output level of signal shifted two octaves up
  • MOD knob adjusts rate of modulation effect
  • FOOTSWITCH toggles effect on/bypass (white LED indicates on)


  • The MXR® Poly Blue Octave requires 9 volts (265mA) and can be powered by the included Dunlop ECB003 9-volt adapter or a Brick™ Series power supply. This pedal cannot be powered by a battery.

Customer reviews

Overall Rating 5/5 (1 reviews)

Great pedal, covering 2 + and 2 sub octaves. Fuzz effect is a bonus although prefer cleaner sound and separate dedicated pedal but useful to have. Provided with power supply. Easy to use, great sound, solid build, worth the money.

Alastair J. - 1/3/2022