EarthQuaker Devices Rainbow Machine V2 – Pitch Shifter & Modulation Pedal


The Rainbow Machine V2 is a pitch shifting & modulation pedal for the adventures and experimenters. Get polyphonic harmonies from a 4th down through a 3rd up and every atonal pitch in between

Requires 9V DC centre negative power supply. Draws approx 68 mA

(2 customer reviews)

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EarthQuaker Devices Rainbow Machine V2

Welcome to EarthQuaker Devices Rainbow Machine V2, in all its updated synthetic glory!

This one is for experimenters, adventurists, and noisemakers, but totally not for purists and/or tone hounds.

There are no “natural sounds” that will come from this box. This is because it takes modern DSP and uses it as a tool of future past to create real-time pitch shifting using digital oscillators.

The sound is much different than most modern-day pitch shifting devices.

Imagineered to be wild and out of control it is slightly imperfect while still tracking up and down the guitar neck without glitching out. A cold digital beast made to pretend it has feelings.

It will do basic polyphonic harmonies from a 4th down through a 3rd up and every atonal pitch in between. So you may add an accompanying octave to the harmony by bringing up the Secondary function control.

You can take it way beyond and open up your third eye by bringing in the Magic. “The Magic” is the heart of the Rainbow Machine.

Along with the Tracking control, the Magic creates wild pitch take-offs and descend’s, chaos chorusing, shrieks, pixie trails, and a wealth of other general mayhem-inducing noises.

The pitch is controlled by an external expression pedal for extra fun!

The Rainbow Machine can, for instance, be used on bass, keys, vocals, or anything else you can dream up!

About version 2 of the Rainbow Machine:

The Rainbow Machine is completely re-imagineered from the pixie dust-covered ground up to be more versatile, twice as loud as the original

With the Magic engaged and the control set low, you can squeeze a few extra repeats out of whatever setting you happen to be using.

As you increase the Magic control, you’ll start noticing increased ambience, resonant, edge-of-oscillation pitch-shifting delays, chorus, metallic digi-flanging, ascending (or descending) pixie trails, controllable self-oscillation, squalls of synthetic noise, whale song, and finally, distortion.

It’ll take you way beyond and open up your third eye, trust us.

In conjunction with the Tracking control, the Magic creates wild pitch take offs and descends, chaos chorusing, shrieks, groans, gurgles, wizard-blessed wizardry, signal transformation, imminent destruction, and other general mayhem.

Maybe you only wanna get weird for a second?

Okay, with the Rainbow Machine engaged, hold down the Magic footswitch, get weird, and then let go to return to your boring, old Magic-less guitar tone.

Or, press the switch like normal, and the Magic remains engaged until you press the switch again. Ditto for the Activate switch. Press and hold to use the Rainbow Machine as a momentary effect, then let go to bypass, or feel free to press the switch like normal and use the Rainbow Machine like you would any other effects pedal.


The Rainbow Machine is built around a DSP pitch warping engine that’s designed to be slightly imperfect; colored with digital remnants of the cosmic dust we’ve picked up across the multiverse.

That is to say, it’s a cold digital beast made to pretend it has feelings.


This control adjusts the frequency of the polyphonic pitch-warped harmony from a fourth below your input, to a third above, and every atonal pitch in-between. Noon is the unison position.

Pitch may also be controlled via an expression pedal. Use the Primary (4) function control to adjust the volume of the polyphonic harmony


Controls the lag time between the wet and dry signals.


Rolls off some treble for a darker, “vintage” sound. Clockwise Tone settings are bright, counterclockwise is dark.


This control adds an octave of the Primary harmony.

When the Pitch control is above noon, Secondary adds an octave above the harmony. When the Pitch control is below noon, the Secondary control will add one octave below the harmony.

With the Pitch set to noon, the Secondary control adds an additional chorus voice for modulated, triple-tracked tones. Use this control to blend in faux-shimmer sounds or a low-frequency rumble. It’s up to you. From there, it’s only a matter of how weird you wanna get.


And you can choose how weird you get with the Magic control. This is a regeneration control that creates aliasing (among other things) by feeding the Primary and Secondary signals back on themselves and each other, and a bunch of other stuff no one understands.

You can see it here in all its glory!


  • All Analog Dry Signal Path
  • Expression Control Jack
  • Activate Switch
  • Magic Switch
  • Pitch Control
  • Primary Control
  • Secondary Control
  • Tracking Control
  • Magic Control
  • Tone Control
  • True Bypass

Requires 9V DC centre negative power supply. Draws approx 68ma

Additional information

Weight 0.45 kg
Dimensions 11.8 × 9.3 × 5.7 cm
Analogue or Digital

Analogue & Digital


Red, White


68 mA



Pedal Type

Modulation, Pitch

Power Connection Type

Centre Negative

Silicon or Germanium




EAN 13





Rainbow Machine V2

2 reviews for EarthQuaker Devices Rainbow Machine V2 – Pitch Shifter & Modulation Pedal

  1. Ang B (verified owner)

    Truly great unusual fx pedal

  2. Tim 2 (verified owner)

    Highly recommended

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