Intelligent Harmony Machine
Intelligent Harmony Machine
Intelligent Harmony Machine
Intelligent Harmony Machine
Intelligent Harmony Machine
Intelligent Harmony Machine
Intelligent Harmony Machine

Intelligent Harmony Machine

Harmonizer / Pitch Shifter
Instantly create matching harmonies to what you play.

$241.50

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Sound Clips
Triad 2nd Inversion
Western Swing
3rd Above
Perfect 4th Down
5th Up Blend
Various Pitch Sweep Times
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  • Intelligent Harmony Machine | Harmonizer / Pitch Shifter
  • $241.50
  • Find a Dealer

Intelligent Harmony Machine

DESCRIPTION

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.

Select your key and the Intelligent Harmony Machines will generate single note, diatonic harmonies* with a huge range of choices that includes both two- and three-part harmonies. Here are your choices:

1 6th Down
2 Perfect 4th Down
3 3rd Down
4 3rd Up
5 Perfect 4th Up
6 Perfect 5th Up
7 6th Up
8 7th Up
9 3rd Up + 7th Up
10 3rd Up + 7th Up
11 Perfect 5th Up + Octave Up

These sound so cool that we’ve included them as extra options for the multi-harmony parts (selections 9, 10 and 11) to give you even more choices:

9 optional 4th Down + 3rd Up
10 optional 3rd Up + 6th Up
11 optional Octave Down + 5th Up
9 optional 6th Down + 4th Down
10 optional 3rd Down + 3rd Up
11 optional Octave Down + 4th Down

The Intelligent Harmony Machine also performs perfect polyphonic pitch shifts so the pitch shifts you dial up are applied to chords as well as single notes. We’ve even included a Major/Minor switch so you can select whether 2nds and 3rds will be major or minor. Here are the interval selections that are available:

1 Doubler
2 Perfect 4th Down
3 3rd Down (minor on major)
4 3rd Up (minor or major)
5 Perfect 4th Up
6 Perfect 5th Up
7 2nd Down (minor or major)
8 2nd Up (minor or major)
9 Octave Down
10 Octave Up
11 Perfect 5th Up + Octave Up

The Intelligent Harmony Machine’s Moment Mode lets you instantly change pitch by simply depressing the pedal’s footswitch. The pitch shift is engaged as long as you hold down the F/S. 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!

EHX Founder, Mike Matthews said: “We designed the Intelligent Harmony Machine for the player who craves maximum power, but in a minimal footprint. You’ll dig its sweet, musical tone and spotless tracking!”

*Diatonic harmony means notes within a specific key that relate to each other.

  • 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 equipped with an EHX 9 Volt power supply, can also run on 9 Volt battery

SPECIFICATIONS

Circuit
Digital
Bypass
Buffered Bypass
Audio
Mono
Power Supply
9.6VDC-200mA power adapter included (optional 9V battery not included)
Dimensions (in)
4.5 x 2.75 x 2.1
Current Draw
26mA
Year Released
2021
UPC
683274012377
Owner's Manual
9V POWER JACK
The included 9VDC, center-negative power supply can be connected to the power jack to provide power without a battery. The IHM requires 26mA at 9VDC on a center-negative plug. Do not exceed 10.5VDC at the power jack. When using a 9V battery, plugging into the INPUT jack activates power. The input cable should be removed when the unit is not in use to avoid running down the battery. We recommend alkaline batteries for the IHM.
KEY KNOB
This seven-position rotary switch, in conjunction with the toggle switch to its right, sets the key the IHM is in while in Intelligent Mode. This knob has no effect while in Polyphonic Override Mode.
KEY TOGGLE SWITCH
This switch works in conjunction with the knob to its left to set the key of the IHM. With the switch in its upwards position the key is set to the sharp variation of the key set by the KEY knob. With this switch in its downwards position, the key is set to the natural variation of the key set by the KEY knob. This switch has no effect while in Polyphonic Override Mode.
MAJ / MIN TOGGLE SWITCH
In Intelligent Mode this switch sets whether the key (set by the KEY knob and switch) is major or minor. In Polyphonic Override Mode this switch can be used for intervals 3, 4, 7, & 8 (3rds and 2nds) to set whether the pitch-shift interval is a major 3rd/2nd or a minor 3rd/2nd.
POLY-OVERRIDE BUTTON
Use this button to switch between Intelligent Harmony mode and Polyphonic Override mode. When his switch is lit the IHM is in Polyphonic Override mode.
MIX KNOB
Sets the mix between the dry and effect (harmony or pitch-shifted) signal. Fully dry signal at minimum, fully effected signal at maximum.
VOLUME KNOB
Sets the output volume of the IHM.
INTERVAL SELECT KNOB
This eleven-position rotary switch selects the interval of the harmony or pitch shift applied to the effect signal. The exact function of these intervals varies depending on which mode the IHM is in.
MOMENT BUTTON
When this illuminated button is lit, the IHM is in momentary mode. In momentary mode, the effect is only active while the footswitch is held down.
DRY OUT JACK
This jack outputs a buffered version of the dry signal present at the INPUT jack at all times. The source impedance presented at the DRY OUT jack is 680Ω. Pro Tip: when using DRY OUT, you can set MIX to maximum so that only the wet signal is present at the OUTPUT jack. Each output jack now outputs a different set of notes, or a unique signal, that can go to its own amp or be processed individually.
OUTPUT JACK
This is the main output for the IHM. The source impedance presented at the OUTPUT jack is 680Ω.
INPUT JACK
This is the input jack for the IHM. The load impedance presented at the INPUT jack is 2.2MΩ.
FOOTSWITCH and STATUS LED
The footswitch is used to toggle the effect on and off. When the MOMENT button is lit, the IHM is in momentary mode, and the effect will only be active while the footswitch is being held down. With the MOMENT button off, the IHM is in latching mode. In latching mode pressing and releasing the footswitch once will switch between the IHM being active and being in buffered bypass mode. The red LED illuminates to indicate when the IHM is active.

“We designed the new Intelligent Harmony Machine for the player who craves maximum power, but in a minimal footprint. You’ll dig its sweet, musical tone and spotless tracking!”

–Mike Matthews

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