Pricing and availability

We compare 600+ stores and found this item at 9 stores. Prices updated .

Sweetwater
3.5 (24)
$241.50
Guitar Center
3.5 (3)
$241.50
Amazon
3.6 (14)
$241.50
Reverb
4.0 (23)
$205.63 New
$135.00 Used
zZounds
4.0 (1)
$241.50
Thomann
4.6 (25)
$199.00
Gear4Music
£214.00

Average Price: $221

Standard/Professional

$100

$301+

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Price History

Based on price data from 7 merchants for "Electro-Harmonix Intelligent Harmony Machine". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Unleash your creative prowess with the Electro-Harmonix Intelligent Harmony Machine. This innovative pedal is a game-changer for guitarists and bassists, offering an unparalleled ability to generate harmonies and pitch shifts as you play. It's like having additional musicians jamming with you in perfect sync, creating an immersive musical experience that expands your tonal palette.

The Intelligent Harmony Machine generates harmonies ranging from simple to complex. In the Intelligent Harmony mode, you can select your key and watch as the pedal produces single note, two-, or three-part harmonies in real time, delivering a lush, full sound. The pedal also features a polyphonic pitch-shifting function, turning it into a pitch-shifting powerhouse in the Polyphonic Override mode.

Enjoy the flexibility of the pedal's stereo outputs, allowing you to send the dry signal to one amp and the effected signal to another. The easy-to-use key selector and interval selector offer a wide array of harmonizing choices. Crafted with premium components and housed in a compact, rugged chassis, the Intelligent Harmony Machine guarantees reliable performance under harsh conditions.

Key Features: - Generates harmonies and pitch shifts in real time. - Two distinct operating modes: Intelligent Harmony and Polyphonic Override. - 11-interval selector switch for a wide range of harmonizing choices. - Stereo outputs with dry-through for flexible signal routing. - Momentary mode applies the effect only when the footswitch is pressed. - Key selector provides access to all 12 keys. - Rugged construction built to withstand the rigors of the road. - Powered by a 9V battery or optional EHX 9.6DC 200 power supply. - Impeccable tracking and superb musical tone.

Owner's manual

Electro-Harmonix Intelligent Harmony Machine User Manual

Product specs

Pedal Type Harmony, Pitch Shift
Analog/Digital Digital
Effects 17 x Harmony Modes, 11 x Polyphonic Pitch Shift Modes
Inputs 1 x 1/4"
Outputs 1 x 1/4" (main out), 1 x 1/4" (dry out)
Bypass Switching Buffered
Features Momentary Switching Mode
Power Source 9.6V DC power supply (included)
Power Usage 26mA
Batteries 1 x 9V
Height 2.1"
Width 2.75"
Depth 4.5"

FAQs

What are the main effects available on the Electro-Harmonix Intelligent Harmony Machine?

The Electro-Harmonix Intelligent Harmony Machine offers 17 harmony modes and 11 polyphonic pitch shift modes, allowing for a wide range of creative possibilities in your sound.

Can the Electro-Harmonix Intelligent Harmony Machine be used with a bass guitar?

Yes, the Electro-Harmonix Intelligent Harmony Machine can be used with a bass guitar, providing harmonies and pitch shifts that complement lower frequencies effectively.

Does the Electro-Harmonix Intelligent Harmony Machine require a specific power supply?

The Electro-Harmonix Intelligent Harmony Machine requires a 9.6V DC power supply, which is included with the pedal, ensuring it operates correctly without needing additional purchases.

How does the momentary switching mode work on the Electro-Harmonix Intelligent Harmony Machine?

The momentary switching mode allows you to engage the effect only while holding down the footswitch, providing dynamic control over when harmonies and pitch shifts are applied during performance.

Is the Electro-Harmonix Intelligent Harmony Machine suitable for live performances?

Yes, with its buffered bypass switching and versatile harmony and pitch shift options, the Electro-Harmonix Intelligent Harmony Machine is well-suited for live performances, offering reliable sound quality and flexibility.

EHX

EHX

Electro-Harmonix Intelligent Harmony Machine

Video thumbnail for Electro-Harmonix Intelligent Harmony Machine by EHX

Electro-Harmonix Intelligent Harmony Machine

EHX

EHX

Video thumbnail for Intelligent Harmony Machine VS Quintessence: Which Wins? (Harmonizer Shootout) by Chords Of Orion

Intelligent Harmony Machine VS Quintessence: Which Wins? (Harmonizer Shootout)

Chords Of Orion

Chords Of Orion

Video thumbnail for Electro Harmonix Intelligent Harmony Machine Review by Minimalist Musician

Electro Harmonix Intelligent Harmony Machine Review

Minimalist Musician

Minimalist Musician

Video thumbnail for PEDAL SHOOTOUT: EHX Intelligent Harmony Machine vs. DigiTech Whammy V by Drew Creal

PEDAL SHOOTOUT: EHX Intelligent Harmony Machine vs. DigiTech Whammy V

Drew Creal

Drew Creal

Video thumbnail for Tone Tailors - Electro-Harmonix Intelligent Harmony Machine by Tone Tailors Guitar Shop

Tone Tailors - Electro-Harmonix Intelligent Harmony Machine

Tone Tailors Guitar Shop

Tone Tailors Guitar Shop

Video thumbnail for Pedals We Love : Electro-Harmonix Intelligent Harmony Machine by Perfect Circuit

Pedals We Love : Electro-Harmonix Intelligent Harmony Machine

Perfect Circuit

Perfect Circuit

Video thumbnail for Electro-Harmonix Intellegent Harmony Machine - VGW by Vintage Guitar Workshop

Electro-Harmonix Intellegent Harmony Machine - VGW

Vintage Guitar Workshop

Vintage Guitar Workshop

Video thumbnail for ELECTRO HARMONIX INTELLIGENT HARMONY MACHINE by Chili Music TV

ELECTRO HARMONIX INTELLIGENT HARMONY MACHINE

Chili Music TV

Chili Music TV

Video thumbnail for Electro Harmonix Intelligent Harmony Machine B drop tuning using a Fender Stratocaster w/BKP pickups by Jay Padua

Electro Harmonix Intelligent Harmony Machine B drop tuning using a Fender Stratocaster w/BKP pickups

Jay Padua

Jay Padua

Video thumbnail for Electro-Harmonix Intelligent Harmony Machine by Jam Bumanlag

Electro-Harmonix Intelligent Harmony Machine

Jam Bumanlag

Jam Bumanlag

Video thumbnail for EHX Intelligent Harmony Machine & Pitch Fork | Bass sounds! by Rich's Music & Tech Stuff

EHX Intelligent Harmony Machine & Pitch Fork | Bass sounds!

Rich's Music & Tech Stuff

Rich's Music & Tech Stuff

Reviews

PROS

  • Instant dual/triple harmony lead lines possible

  • Polyphonic pitch shifting for varied guitar sounds

  • Responsive, rarely misinterprets note height or interval

  • Poly Overide mode offers additional functionality

  • Tracks well with no noticeable latency

  • Versatile: works well with chords and single notes

  • Can split signal into stereo for immersive sound

  • Durable and road-ready build quality

  • Useful for practicing in any key

  • Encourages precise bending with immediate feedback

CONS

  • Requires some music theory knowledge for best use

  • Settings difficult to adjust without being close to the pedal

  • May sound monotonous in non-experimental music contexts

  • Perceived as having a digital sound quality by some

  • Not a drop tuner; limited in semitone adjustments

  • Some units may have quality control issues

  • High price point compared to similar pedals

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Electro-Harmonix Intelligent Harmony Machine.

Features and functionality

  • The poly mode algorithm is identical to the EHX Pitch Fork, useful for those considering switching between the two pedals.

    Source
  • The footswitch is placed higher on the unit to accommodate a 9V battery, similar to other EHX battery-powered pedals.

    Source
  • In Poly Override mode with the MAJ/MIN switch on MIN and interval at position 7, the IHM detunes a half-step, offering a semi-tone drop.

    Source
  • The IHM offers extensive harmony options but lacks independent volume controls for pitch shifts, unlike the Pitch Fork+.

    Source
  • The EHX Intelligent Harmony Machine can pitch shift a low B to D, essentially acting as a capo for bassists playing with a guitar in D tuning.

    Source

Comparisons

  • The Intelligent Harmony Machine is compared to BOSS PS-6 and Quintessence, with users noting subtle differences in sound and functionality.

    Source
  • Owners with Digitech Whammy and Behringer Harmonist mention this pedal as a potential compact alternative for pedalboards.

    Source
  • Meris Hedra provides three harmonies from -2 to +2 octaves and independent delay times, offering an alternative with more flexibility.

    Source
  • Users with other pitch shifters like the BOSS PS-6 and Bass Whammy consider replacing them with this EHX pedal for its capo functionality.

    Source

User experience

  • Some users note the lack of an expression pedal as a limitation, affecting performance flexibility compared to other harmonizer pedals.

    Source

Use cases and applications

  • The pedal is suitable for bassists in bands with guitarists using non-standard tunings, avoiding the need to retune the bass.

    Source

Critic Reviews

Guitar Pedal X - GPX Blog - Electro-Harmonix's Intelligent Harmony Machine delivers a Neater and Smarter Harmonizer with Classic Pitchfork style Pitch-Shifting onboard too

guitarpedalx.com

While the Electro-Harmonix Intelligent Harmony Machine offers a versatile blend of pitch shifting and harmonizing capabilities, it falls short in practical usability. The review highlights its complex controls, which lack the intuitive presets needed for seamless live performance, making it cumbersome for those unfamiliar with music theory. Moreover, the MASH footswitch received criticism for its stiffness and inconsistent sensitivity. Although the pedal is praised for its sound quality and dual functionality, the absence of MIDI integration and the need for manual key adjustments diminish its appeal for gigging musicians. Ultimately, it’s a smart concept that requires further refinement to truly shine on stage.

negative

Pedals We Love: EHX's Intelligent Harmony Machine - Perfect Circuit

perfectcircuit.com

The Electro-Harmonix Intelligent Harmony Machine redefines pitch-shifting with impressive versatility. Offering both intelligent harmonization and polyphonic pitch options, it excels in creating complex sounds seamlessly integrated into any performance. Its ability to produce a variety of intervals and chords in key is a standout feature, catering to a wide range of musical styles. However, the lack of a direct key center control in Poly Override mode may limit some users' creative potential. Still, for those looking to enrich their soundscape with innovative harmonics, this pedal is a compelling choice that balances flexibility with performance.

positive

Electro-Harmonix ups its pitch-shifting pedal IQ with the Intelligent Harmony Machine | Guitar World

guitarworld.com

The Electro-Harmonix Intelligent Harmony Machine is a versatile addition to any pedalboard, offering smart harmonies and traditional pitch-shifting in a compact design. With features like diatonic harmonies, polyphonic modes, and intuitive controls, it impresses both in performance and usability. However, some may find the learning curve steep, and the complex functionalities can be overwhelming for casual users. While the tracking is praised for its accuracy, the tonal quality may not suit every player's taste. Overall, this pedal is a powerful tool for those seeking to expand their sonic palette, but it may not be for everyone.

positive

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Artist usage

Add artist
See how Billy Strings uses Electro-Harmonix Intelligent Harmony Machine

Billy Strings

Guitarist

...
Verified via Photo

See article where Billy and Molly Tuttle provide gear details: https://www.premierguitar.com/artists/guitarists/billy-strings-and-molly-tuttle

See how NIgel Tufnel uses Electro-Harmonix Intelligent Harmony Machine

NIgel Tufnel

Guitarist

Spinal Tap

...
Verified via Photo

Nigel Tufnel is seen using the Electro-Harmonix Intelligent Harmony Machine on the first iteration of his pedal board in the studio, as depicted in the movie "Spinal Tap: The End Continues." This is evidenced by an image available on Equipboard.

See how Katy Kirby uses Electro-Harmonix Intelligent Harmony Machine

Katy Kirby

Singer, Guitarist

...
Verified via Photo

Katy Kirby uses the Electro-Harmonix Intelligent Harmony Machine. This is evidenced by a photo taken at her live performance in 2023 at Ace of Cups in Columbus, Ohio, which clearly shows the pedal on her board.

Album Usage

The Electro-Harmonix Intelligent Harmony Machine has been featured on the following albums:

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use Electro-Harmonix Intelligent Harmony Machine, it is most commonly used with the following gear.

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1 alternative for Electro-Harmonix Intelligent Harmony Machine, curated by the Equipboard community.

Electro-Harmonix Pico Intelligent Harmony Machine Pedal

$125.00 - $205.63

similar sound cheaper alternative

The Pico is a simplified version of the Intelligent Harmony Machine, featuring a smaller footprint.

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Gear Guides

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    troyrk

    Gear IQ 1363