Pricing and availability
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Average Price: $324
Standard/Professional
$150
$601+
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Price History
Based on price data from 2 merchants for "Electro-Harmonix EH-7900 Micro Synthesizer". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Introduce the Electro-Harmonix EH-7900 Micro Synthesizer, an instrument that bridges the gap between vintage and modern soundscapes. This guitar synthesizer pedal takes your sound beyond traditional boundaries, unlocking a universe of tonal possibilities. From the timeless resonance of early Moog synthesizers to audacious, custom-made soundscapes, the EH-7900 is your ticket to unexplored sonic realms.
Featuring ten slider controls, the EH-7900 offers unparalleled versatility, allowing you to shape and mold your tone with precision. Highlighting its four independent and fully mixable voices - Guitar, Octave, Sub-Octave, and Square Wave, this micro synthesizer provides the means to craft unique, otherworldly sounds.
With its envelope control, you can modify these signals to create a variety of "bowed" or "blown" sounds. Whether you're chasing the nostalgic tones of the past or breaking new ground with innovative sounds, the EH-7900 Micro Synthesizer is your trusted companion on this sonic journey.
Key Features:
- XO Series chassis
- True bypass
- All analog design
- 2-pole analog resonant filter
- 4 voice mixer section mixes: sub octave, original, octave up and square wave
- Square wave voice can be used as a distortion tone
- Start, stop filter frequency sliders with adjustable rate for full control over the filter's sweep direction and speed
- Adjustable filter resonance control
- Adjustable attack time control for fading-in notes
- Tough and compact die-cast chassis
- 96DC-200BI power supply included
Product specs
| Pedal Type | Guitar Synth |
| Inputs | 1 x 1/4" |
| Outputs | 1 x 1/4" |
| Power Source | 9V DC power supply (included) |
| Height | 3.5" |
| Width | 8" |
| Depth | 7" |
| Weight | 2 lbs. |
FAQs
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What kind of sounds can I create with the Electro-Harmonix Micro Synthesizer?
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The Electro-Harmonix Micro Synthesizer allows you to create a wide range of synth-like sounds, including classic analog synth tones, octave effects, and sweeping filter sounds, ideal for both experimental and traditional music.
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Is the Electro-Harmonix Micro Synthesizer suitable for bass guitar?
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Yes, the Electro-Harmonix Micro Synthesizer works well with bass guitars, offering robust low-end synth sounds that enhance your bass lines with unique textures.
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What power supply does the Electro-Harmonix Micro Synthesizer require?
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The Electro-Harmonix Micro Synthesizer requires a 9V DC power supply, which is included with the pedal.
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Can the Electro-Harmonix Micro Synthesizer be used in a live performance setup?
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Absolutely, the Electro-Harmonix Micro Synthesizer is designed for live use, providing musicians with versatile sound options and reliable performance on stage.
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How does the Electro-Harmonix Micro Synthesizer differ from other guitar synth pedals?
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The Electro-Harmonix Micro Synthesizer stands out with its classic analog design, offering a unique combination of envelope shaping, sub-octave, and filter sweep controls for a broad sonic palette.
Videos
EHX
Electro-Harmonix Micro Synthesizer Analog Guitar Microsynth Pedal (Demo by Peter Stroud)
Electro-Harmonix Micro Synthesizer Analog Guitar Microsynth Pedal (Demo by Peter Stroud)
EHX
PedalsAndEffects: 1970's era Electro Harmonix Micro Synthesizer
Pedals and Effects
Electro Harmonix Micro Synthesizer
shnobel
Vintage 1979 Electro-Harmonix Micro Synthesizer
GMR spares
EHX Micro Synthesizer Violin Demo
Rob Flax
1979 Electro Harmonix Micro Synthesizer V1 ∆ ultra rare first version
aplusfx
Reviews
PROS
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Versatile pedal with touch-sensitive response
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User-friendly layout blends classic and unique synth tones
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Converts electric guitar into a bass effectively
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Square wave distortion cuts fiercely atop overdriven amps
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Offers classic synth-y, robotic sounds reminiscent of iconic bands
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Fuzz feature competes with top fuzz pedals in the market
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Voice Mix section allows for custom blend of fuzz and octave sounds
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Encourages exploration with various settings for creative sound creation
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Rewards players with clean picking technique and patience
CONS
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Tracking issues with sustained notes and complex chords
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High sensitivity to playing dynamics and settings requires precision
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Not ideally suited for typical rock guitar setups
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Lacks presets for easy sound switching
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Large size and 24V power requirement in older models
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Fuzz does not clean up, limiting versatility
5.0 out of 5
Based on 1 Review and 16 Ratings
1963
Great guitar filter.
I have used this a fair bit lately. Has almost a Robert Fripp quality to it.
Artist usage
Add artist
"So the main part goes through the Electro-Harmonix Micro Synth, which gives it a weird, slightly slower attack—makes it like a wah-esque attack—with a low octave in there."
In this picture from Sonic Youth's website we can see this picture of Kim's pedalboard.
On the top part of this pic Head's pedalboard can be seen. The most right pedal is a Microsynth
Rig for Desert daze from jay's instragram stories
Used during the ‘slanted and enchanted’ era. Mostly on solos. Can be seen in this video around 0.25
In this photo source, the EHX Micro Synthesizer is visible as a part of Scofield's pedalboard.
Used on "I Magnify", "Atomic Holiday" and "Galaxy Of Tears", as specified in this July 20, 2012 breakdown of a A Fine Pink Mist gear list printed in the October 1996 issue of Young Guitar.
Can be seen in his pedalboard in this photo. Used in the Age of Adz tour.
Used on his pedalboard from 2002 til the end of silverchair. He used this pedal heaps in diorama album and also live. On the album he'd use it to thicken up distorted tones. Live, he'd use it to get a crazy buzz-saw fuzz sound with a subtle low octave beneath it. Notably used on The Lever and the end of Without You
Pedal 95 in Stompbox: 100 Pedals of the World's Greatest Guitarists, as can be seen in the quick browse video at 0:39.
Trey Azagthoth uses the Electro-Harmonix EH-7900 Micro Synthesizer, as detailed on the EHX website.
Album Usage
The Electro-Harmonix EH-7900 Micro Synthesizer has been featured on the following albums:
Canción de una canción
Pablo Ilabaca & Como Asesinar A Felipes (2025)
Canciones para Conversar Con la Muerte
Pablo Ilabaca (2021)
MASSEDUCTION
St. Vincent (2017)
The Age of Adz
Sufjan Stevens (2010)
Young Modern
Silverchair (2007)
In Rainbows
Radiohead (2007)
Live In Chicago
Ween (2004)
All Request Live
Ween (2003)
Live at Stubb's, 7/2000
Ween (2003)
Diorama (U.S. Version)
Silverchair (2002)
Live In Toronto Canada (feat. The Shit Creek Boys)
Ween (2001)
Engines of Creation
Joe Satriani (2000)
Showbiz
Muse (1999)
Paintin' The Town Brown (Live)
Ween (1999)
The Fragile
Nine Inch Nails (1999)
Vanishing Point
Primal Scream (1997)
Slanted & Enchanted
Pavement (1992)
Dream Generator
Carlos Alomar (1987)
Fair Warning (Remastered)
Van Halen (1981)
Lust For Life
Iggy Pop & Iggy Pop (1977)
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 EH-7900 Micro Synthesizer, it is most commonly used with the following gear.
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Community setups
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