Item #1561960 Model #IHM

Electro-Harmonix Intelligent Harmony Machine Effects Pedal Grey


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Generates in-sync harmonies and instant pitch switches for endless tone potential.

The Electro-Harmonix Intelligent Harmony Machine effects pedal creates matching harmonies as you play, providing the sound of another guitarist playing along in perfect sync. Access the sounds of multi-lead guitar bands and multi-part harmonized solos with its ability to apply harmonies ranging from simple to sophisticated, powered by the reliable tracking and genuine musical tone of EHX. Select your key and the Intelligent Harmony Machines will generate single note, diatonic harmonies that includes both two- and three-part harmonies.

The Intelligent Harmony Machine also performs perfect polyphonic pitch shifts and includes a Major/Minor switch. There’s also an option so you can apply a user-set sweep time between dry and effect. Choose instant pitch changes or control the time it takes for the Intelligent Harmony Machine to sweep up and down between the set interval and the dry signal.


  • Compact harmony generating, pitch-shifting powerhouse
  • Impeccable tracking and superb musical tone
  • Two distinct modes: Intelligent Harmony and Polyphonic
  • Intelligent Harmony Mode generates diatonic harmonies in a set key based on the single notes you play
  • In Polyphonic Override Mode you can play single notes and chords
  • Choose from instant shifts or set the time it takes the signal to sweep up and down
  • Mix control sets the mix between your dry and shifted signals
  • Comes equipped with an EHX 9V power supply, can also run on 9V battery (sold separately)