Pricing and availability

We compare 600+ stores and found this item at 5 stores. Prices updated .

Sweetwater
4.5 (2)
$324.80
Reverb
5.0 (6)
$399.00 8 available Used
zZounds
4.0 (5)
$324.80
Gear4Music
£288.00

Average Price: $324

Standard/Professional

$150

$601+

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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

What kind of sounds can I create with the Electro-Harmonix Micro Synthesizer?

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.

Is the Electro-Harmonix Micro Synthesizer suitable for bass guitar?

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.

What power supply does the Electro-Harmonix Micro Synthesizer require?

The Electro-Harmonix Micro Synthesizer requires a 9V DC power supply, which is included with the pedal.

Can the Electro-Harmonix Micro Synthesizer be used in a live performance setup?

Absolutely, the Electro-Harmonix Micro Synthesizer is designed for live use, providing musicians with versatile sound options and reliable performance on stage.

How does the Electro-Harmonix Micro Synthesizer differ from other guitar synth pedals?

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.

EHX

EHX

Electro-Harmonix Micro Synthesizer Analog Guitar Microsynth Pedal (Demo by Peter Stroud)

Video thumbnail for Electro-Harmonix Micro Synthesizer Analog Guitar Microsynth Pedal (Demo by Peter Stroud) by EHX

Electro-Harmonix Micro Synthesizer Analog Guitar Microsynth Pedal (Demo by Peter Stroud)

EHX

EHX

Video thumbnail for PedalsAndEffects: 1970's era Electro Harmonix Micro Synthesizer by Pedals and Effects

PedalsAndEffects: 1970's era Electro Harmonix Micro Synthesizer

Pedals and Effects

Pedals and Effects

Video thumbnail for Electro Harmonix Micro Synthesizer by shnobel

Electro Harmonix Micro Synthesizer

shnobel

shnobel

Video thumbnail for Vintage 1979 Electro-Harmonix Micro Synthesizer by GMR spares

Vintage 1979 Electro-Harmonix Micro Synthesizer

GMR spares

GMR spares

Video thumbnail for EHX Micro Synthesizer Violin Demo by Rob Flax

EHX Micro Synthesizer Violin Demo

Rob Flax

Rob Flax

Video thumbnail for 1979 Electro Harmonix Micro Synthesizer V1 ∆ ultra rare first version by aplusfx

1979 Electro Harmonix Micro Synthesizer V1 ∆ ultra rare first version

aplusfx

aplusfx

Reviews

PROS

  • Versatile pedal with touch-sensitive response

  • User-friendly layout blends classic and unique synth tones

  • Converts electric guitar into a bass effectively

  • Square wave distortion cuts fiercely atop overdriven amps

  • Offers classic synth-y, robotic sounds reminiscent of iconic bands

  • Fuzz feature competes with top fuzz pedals in the market

  • Voice Mix section allows for custom blend of fuzz and octave sounds

  • Encourages exploration with various settings for creative sound creation

  • Rewards players with clean picking technique and patience

CONS

  • Tracking issues with sustained notes and complex chords

  • High sensitivity to playing dynamics and settings requires precision

  • Not ideally suited for typical rock guitar setups

  • Lacks presets for easy sound switching

  • Large size and 24V power requirement in older models

  • Fuzz does not clean up, limiting versatility

5.0 out of 5

Based on 1 Review and 16 Ratings

5 star
4 star
3 star
2 star
1 star
rothhandlestudios

Great guitar filter.

I have used this a fair bit lately. Has almost a Robert Fripp quality to it.

Genres:
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Artist usage

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See how J. D. Cronise uses Electro-Harmonix EH-7900 Micro Synthesizer

J. D. Cronise

Guitarist

The Sword

...
Verified via YouTube

At 0:55, Cronise talks about the Micro Synth, which he uses on the intro to "Astraea's Dream".

See how samuraiguitarist uses Electro-Harmonix EH-7900 Micro Synthesizer

samuraiguitarist

Guitarist, Composer

...
Verified via YouTube

Appears in his video where he shows each of his gears

See how Alan Day uses Electro-Harmonix EH-7900 Micro Synthesizer

Alan Day

Singer, Guitarist

Four Year Strong

...
Verified via YouTube

The EHX micro synthesizer can be seen at 7:48 of Day's rig Rundown.

See how Pablo Ilabaca uses Electro-Harmonix EH-7900 Micro Synthesizer

Pablo Ilabaca

Singer, Guitarist

Chancho en Piedra

...
Verified via Photo

Used in Eligiendo una Reina and Lophophora. Old pedalboard photo.

See how Nick Wheeler uses Electro-Harmonix EH-7900 Micro Synthesizer

Nick Wheeler

Guitarist, Drummer

The All-American Rejects

...
Verified via Photo

In an Instagram post by Nick Wheeler, he features the Electro-Harmonix EH-7900 Micro Synthesizer with the caption "Tiny (Pedal) Dancer," showcasing its use in his setup.

See how Javier Mejia uses Electro-Harmonix EH-7900 Micro Synthesizer

Javier Mejia

Guitarist

Enjambre

...
Verified via Facebook

In a photo from Enjambre's official Facebook page, the Electro-Harmonix EH-7900 Micro Synthesizer can be clearly seen on guitarist Javier Mejia's pedalboard.

See how Mary Timony uses Electro-Harmonix EH-7900 Micro Synthesizer

Mary Timony

Singer, Guitarist

Team Sleep

...
Verified via Hypebot

"Here are the pedals that are on my board right now: Electro Harmonix Micro Synth"

See how León Larregui uses Electro-Harmonix EH-7900 Micro Synthesizer

León Larregui

Singer, Guitarist

Zoé

...
Verified via YouTube

In the video titled "Zoé * Cuarto de Ensayo * 2004 *", León Larregui shows and discusses using the Electro-Harmonix EH-7900 Micro Synthesizer at 19:23, highlighting its application in both concert and studio settings.

See how Tim Wheeler uses Electro-Harmonix EH-7900 Micro Synthesizer

Tim Wheeler

Guitarist

Ash

...
Verified via MusicRadar

"Apparently this is Billy Corgan's secret weapon! I use this on 'Burn Baby Burn' before each chorus kicks in. You can get quite metallic tones, ringing, singing lead tones… It's an amazingly versatile guitar pedal."

See how Eivind Aarset uses Electro-Harmonix EH-7900 Micro Synthesizer

Eivind Aarset

Guitarist

...
Verified via Guitarplayer

My guitar goes into a Lehle D.Loop SgoS Effect Looper/Switcher, which has two loops. Loop A contains a Prescription Electronics Experience Octave/Fuzz, a Dunlop wah, a Boss OD- 2 Turbo OverDrive, and a Rat distortion. Loop B contains a Boss DD-5 Digital Delay, an Alesis Bitrman ModFX multi-effects processor, a Z.Vex Fuzz Factory, and an Electro- Harmonix Micro Synthesizer.

See how Carlos Alomar uses Electro-Harmonix EH-7900 Micro Synthesizer

Carlos Alomar

Guitarist

David Bowie (band)

...
Verified

Mentioned in this January 1984 Guitar World interview, this March 1984 Musician interview, and this January 1985 International Musician & Recording World interview.

Guitar World, January 1984, "Carlos Alomar: Hard Driving Anchor Man For The David Bowie Show" by Gene Santoro

Alomar loves the concept of chimes, high frequencies, strange intervals and an odd bar of time superimposed on top of a very slick rock-funk format. Carlos' own guitar sound is a high-tech one, and any thing that he can pick up or throw into that to further its aims, he will do. He has everything he needs at his fingertips, and he signals the band with a nod of the head. Carlos will take a simple ninth funk chord and — before slapping it out — he'll slide up and down the neck, hit two dissonant intervals in between the funk and slap on his digital delay to make it sound like birds chirping. Then, he'll signal the band to go to the next section. Or, he might start off playing with the micro-synthesizer on, sounding like the guitar's under water, switch on the multi-effects with the sound of angels and then rip into an outrageous heavy-rock thing by slapping on some overdrive. This works out to the kind of sound, for example, he got in 'Fame': that is, funk chops all over the place laid over a clean, whack-flack execution; all kinds of cool chord inversions and substitutions; and the freedom to go wild with volume and sound effects through his mammoth rig of equipment in a huge stadium or hall.

Recently he has simplified his stage rig, and no longer uses the customized 700-watt system that in the past blew away the folks in the front rows. Now he plugs into two Roland Jazz Chorus Amps, with a Roland GP-120 that clicks in for solos. For special effects, he has two top-of-the-line Ibanez multi-effects digitals mounted on racks, and also uses two Electro-Harmonix micro-synthesizers. His favorite performing axes are his stereo Alembic, his 1958 mapleneck Stratocaster with a Kahler tremolo system and his new Steinberger six-string, which he was the first performer to introduce onstage.

Musician, March 1984, "Who The Hell Is Carlos Alomar?" by J.D. Considine, pg. 90

Carlos Alomar's criterion for his stage sound with David Bowie is fairly simple: "When I strum my guitar," he says, "I want to hear it come out of the amplifier just like on the record." To get that clean, well-manicured sound, he uses an Alembic stereo guitar, outfitted with Dean Markley strings (usually .009s), run through two Roland Stereo Chorus amps, with two Ibanez UE-300 effect units, a pair of Yamaha E-1010 delays, and twin Electro-Harmonix 203 guitar synthesizers. He also uses a Stratocaster, a couple of Yamaha guitars, and a prototype Steinberger guitar which he describes as "great, it's really great."

International Musician & Recording World, January 1985, "The Boy Keeps Swinging: David Bowie" by Philip Bashe

Carlos Alomar used an array of guitars: Alembic stereo electric, Steinberger prototype, acoustic, Spanish and 12-string. Amplification consisted of two Roland JC-120s and for effects, he employed two Yamaha E-1010 digital delays, Ibanez UE-400 and UE-405 multi-effects units, and two Electro Harmonix 230 guitar synthesizers. In this era of guitars that sound like every instrument but, Alomar opted for a fairly traditional and lightly textured sound.

"I didn't want too much of a synthesized sound," he explains. "I wanted to keep it balanced because of the horns on the album. And I didn't use the real heavy-duty power, because David's always screaming, 'No Heavy Metal!'"

Alomar played virtually all of the guitars on Tonight and details his unorthodox method of devising parts.

"I'll start off with the Alembic guitar and play one very complicated part, and from that I'll break it down into three parts and then play them all separately. This way you have your stereo placement: one guitar on the right, the other guitar answering on the left, and one guitar playing everything in the middle of the mix. It keeps the sound very interesting."

See how Hisashi Imai uses Electro-Harmonix EH-7900 Micro Synthesizer

Hisashi Imai

Guitarist

Buck-Tick

...
Verified via Free The Tone

Hisashi Imai Rack - BUCK-TICK 2017 “THE PARADE” 30th anniversary

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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sacha_il_bove_show

sacha_il_bove_show

Gear IQ 937

rothhandlestudios

rothhandlestudios

Gear IQ 1963

juliengb

juliengb

Gear IQ 62

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