The EHX Intelligent Harmony Machine instantly creates matching harmonies to what you play. It’s like having one – or even two – guitarists jamming with you at the same time and always in perfect sync. The Intelligent Harmony Machine opens a door to the music of great multi-lead guitar bands and multi-part harmonized solos. Plus, its ability to apply harmonies ranging from simple to sophisticated will totally transform what you play. Of course, it also boasts EHX’s renowned impeccable tracking and genuine musical tone.

QUICK SPECS:
· 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. Key Selector and #/- switches provide access to all 12 keys.
· In Polyphonic Override Mode you can play single notes and chords. The IHM’s 11-position Interval Selector switch lets you select the harmony.
· In Momentary Mode the effect is only active when the footswitch is depressed. 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. Dry output adds signal routing and control options and flexibility
· Comes with an EHX 9 Volt power supply, can also run on 9 Volt battery
 
Details:
https://www.ehx.com/products/intelligent-harmony-machine/