Shop Now, Pay Later with Affirm. Learn More

EarthQuaker Devices
Rainbow Machine Polyphonic Pitch Shifter

Be the first to review this product

Item: N13-6937

Availability: In stock

Rainbow Machine Polyphonic Pitch Shifter


The Rainbow Machine from EarthQuaker Devices is a polyphonic harmonizing modulation machine. Utilizing a modern digital signal processing and modern oscillation circuitry The Rainbow creates some real time pitch shifting, but not in the way you are probably used to. The Rainbow Machine will put a new twist on your playing by adding polyphonic harmonies, wild pitch take offs and descends, chaos chorusing, pixie trails, and transformations before your very ears. With the ability to shift from a 4th down through a 3rd up (including a stop at every atonal station in between) the Rainbow Machine tracks perfectly up and down the neck without any of the typical glitch out. Need an accompanying octave with your harmonies? The Rainbow 's got it, and we haven 't even talked about the Magic yet. The Magic is the true soul of this effect with its ability to add weirdness where there was none before. If you need an actual technical description, it 's a regeneration control that creates aliasing between a mix of the primary and secondary functions feeding back against each other. It has to be heard to be believed.

The EarthQuaker Devices Rainbow Machine features six controls for maximum strangeness. The pitch control controls the pitch of the harmony. With the control fully clockwise is a 3rd up, all the way counter clockwise is a 4th down. The Primary control adjusts the volume of the pitch shifted signal (unity is about 2 O 'clock). The Secondary control adjusts the volume of the secondary pitch shifted signal. The Secondary signal is equal to the original at noon, with a full octave up or down at its extremes. The Tracking control is the amount of Lag time between the dry and the shifted signals. With the Tracking all the way clockwise the shift will occur simultaneously with the dry signal. The Magic varies significantly with the setting of the controls, and produces a vast array of signal transformations that I couldn 't begin to describe. The Tone control puts the power of space-time and string theory in your handswait, no I was kidding, it controls the tone.


  • 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
  • 2.1mm regulated 9V

Questions on Rainbow Machine Polyphonic Pitch Shifter

No questions asked yet

Ask Your Own Question


  • Power: 9V DC Center Negative (2.1mm barrel)
  • Current Draw: 60mA
  • Daisychains not recommended
  • Rugged Aluminum Case
  • Hand-Built
  • Dimensions: 4.625″ x 3.7″ x 2.25″ 

Customer Reviews

Write Your Own Review

You're reviewing: Rainbow Machine Polyphonic Pitch Shifter

How do you rate this product? *

  1 star 2 stars 3 stars 4 stars 5 stars