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Electro-Harmonix C9 Organ Machine

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$185.00 to $259.50 Price Tier: Standard

4.5 (28)

3 Critic Reviews

9 Reviews

Find out who is using Electro-Harmonix C9

6 community setups

28 wishlisted

70 saved

Page last updated Jul 04, 2026

Pricing and availability

We compare 600+ stores and found this item at 9 stores. Prices updated July 4, 2026.

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Reviews

Price

4.5 (63)

$259.50

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4.5 (12)

$259.50

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4.3 (172)

$259.50 New

$194.55 Used (Like New)

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5.0 (96)

$185.00 58 available New

$147.16 26 available Used

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4.0 (30)

$259.50

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4.5 (3)

$259.50

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$259.50

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4.2 (106)

$205.00 $203.00 $2.00 · All time low

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£209.00

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Average Price: $241

Standard/Professional

$150

$601+

Price Tier

In the Guitar Synth Pedals category, Electro-Harmonix C9 Organ Machine is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

Price History

Based on price data from 6 merchants for "Electro-Harmonix C9 Organ Machine". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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The Electro-Harmonix C9 Organ Machine is a sought-after gem in the world of guitar synth pedals. It's the sonic treasure you never knew you needed, with the ability to transform your guitar into nine diverse and richly textured organ and keyboard sounds. From the classic tone-wheel organ to vintage transistorized compact organ sounds, the C9 delivers a musical feast with its nine preset options.

This pedal isn't just about presets, it lets you creatively tweak your sound. With precise control over elements like percussive click, modulation, attack/sustain, and high frequency content, you can shape your sound to match your creative vision. Layer your dry signal to create a symphony of sound or use it with keyboards for an extra punch.

Whether you're looking for a Doors-esque Farfisa tone, a Zeppelin-like harmonic symphony, or a Beatles' Apple Studios organ sound, the C9 has got you covered. Not only does it morph your instrument into a compelling organ sound, but it also allows for swift tracking and adjustable volumes for both dry and organ sounds.

Key Features:

Generates different signature organ sounds from the instrument signal
Offers 9 Presets: Tone Wheel, Prog, Compact, Shimmer, Lord Purple, Mello Flutes, Blimp, Press Tone & Telstar
Fast tracking for precise sound control
Controls for Dry (Vol), Organ (Vol), Modulation and Click
Jack input and outputs for input signal (Dry) and effects signal (Organ)
Can be combined with a B9 for a complete array of compelling effects
The perfect way to play classic organ tones with your guitar
Each tonewheel organ setting includes a rotary speaker emulation effect with speed control plus separate key click/percussion control
Blend wet and dry signals in the box or send them to separate outputs for complex rig setups

Owner's manual

Electro-Harmonix C9 Organ Machine User Manual

Product specs

Available since	January 2015
Effect Types	Organ

FAQs

What type of effects does the Electro-Harmonix C9 Organ Machine produce?: The Electro-Harmonix C9 Organ Machine emulates classic organ sounds, transforming your guitar output into tones reminiscent of vintage organs such as the Hammond B3.
Can the Electro-Harmonix C9 Organ Machine be used with a bass guitar?: Yes, the Electro-Harmonix C9 Organ Machine can be used with a bass guitar, though results may vary depending on the frequency range and settings.
What power supply does the Electro-Harmonix C9 Organ Machine require?: The Electro-Harmonix C9 Organ Machine requires a standard 9V DC power supply with a minimum current draw of 100mA.
How does the Electro-Harmonix C9 compare to the B9 Organ Machine?: The Electro-Harmonix C9 offers a different set of organ and keyboard emulations compared to the B9, providing unique tonal options for different musical contexts.
Is the Electro-Harmonix C9 Organ Machine easy to integrate into a pedalboard setup?: Yes, the Electro-Harmonix C9 Organ Machine is designed to fit standard pedalboard setups and can be easily integrated with other effects pedals.

Videos

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EHX

Electro-Harmonix C9 Organ Machine (EHX Pedal Demo by Bill Ruppert)

EHX

Electro-Harmonix C9 Organ Machine Guitar Pedal Review by Don Carr

Sweetwater

EHX electro-harmonix C9 Organ Machine demo

David Curtis

Electro Harmonix C9 Organ Machine Guitar Effects Pedal Demo Review

Sound Affects

Electro-Harmonix C9 Organ Machine | Reverb Demo Video

Reverb

EHX C9 Organ Machine Effects Pedal

intheblues

Electro Harmonix C9 Organ machine with Acoustic Guitar C9 오르간머신 Test/원미사운드

WM SOUND Guitars 원미사운드

Electro Harmonix C9 Organ Machine Pedal | Review

Guitar Interactive Magazine

Electro Harmonix C9 Organ Machine Guitar Effects Pedal

PMTVUK

Reviews

Add review

PROS

Offers a wide range of organ and mellotron sounds
Enhances the guitar repertoire without needing a keyboard player
Dual outputs allow for blending with guitar's dry signal
Fully polyphonic, capturing every note in chords
Encourages creativity and exploration in playing
Useful for both live performances and recording
Adds depth to a band's sound palette
Complements a pedalboard with unique textures
Solid construction with a metal casing
Tracks the guitar signal excellently

CONS

Some learning curve and playing style adaptation required
Tracking accuracy varies with playing speed and style
Lacks true bypass, potentially affecting signal quality
Construction not as sturdy as competitors like Boss pedals
No battery option; requires mains power
Inconsistent volume levels can be challenging to manage
Lacks dynamic control for effects like vibrato
High price point for a pedal considered by some as more "fun" than "must-have"
Presets may have limited usability for some players
Note sustain is somewhat limited without additional equipment

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Electro-Harmonix C9 Organ Machine.

Features and functionality

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Owners find the C9 pedal more effective for chords rather than single-note playing, especially when paired with compression beforehand.
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Dry output allows mixing the guitar's dry signal with the pedal effect, useful for routing through another amp or effects chain.
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The modded C9 requires identifying algorithms by ear, as it lacks an LED or LCD for mode indication, cycling through effects in alphabetical order.
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Use cases and applications

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Pairing the C9 with the EHX Lester K creates convincing Hammond/Leslie sounds, enhancing its appeal for organ emulation.
Source
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The Telstar setting is favored when paired with a Boss CS-3 compressor for enhanced sound quality.
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A user reported issues with 9-series pedals failing when powered by a 1Spot; isolated power supplies like Cioks are recommended instead.
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Setup and maintenance

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For optimal tracking, place the C9 pedal early in the signal chain, typically after the guitar and compressor, with the bridge pickup selected.
Source

User experience

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Some users wish for preset capabilities, but note that it would increase the pedal's size, impacting pedalboard space.
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Running multiple "9" series pedals in parallel can produce complex and rich sounds, though they require clean notes for best performance.
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Users report achieving a unique steel guitar sound by combining the flute setting with delay and a slow gear effect.
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Owners find the modded C9 as a "till the day I die" pedal due to its versatility and the ability to access all 9-series sounds in one unit.
Source

Comparisons

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While some found the C9's emulation challenging, the Hog2 was praised for its versatility in transforming guitar sounds comprehensively.
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Mods and upgrades

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A mod allows the C9 to cycle through all 9-series algorithms, utilizing a discreet side button without altering the pedal's original weight or appearance.
Source
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A JHS modification allows a C9 mod knob to act as an expression jack while retaining original functionality, enhancing expression control options.
Source

Software and compatibility

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The 9-series mod involves swapping EEPROMs to load multiple algorithms into one enclosure, similar to modifying gaming cartridges with multiple games.
Source

Value and pricing

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A modded C9 was purchased for £250/$310, offering significant savings compared to buying multiple individual 9-series pedals.
Source

Critic Reviews

Electro-Harmonix C9 Organ Machine

soundonsound.com

The Electro-Harmonix C9 Organ Machine is a standout pedal, praised for its ease of use and impressive emulations of classic organ sounds. It's a hit with musicians for its simple controls and versatility, allowing for a mix of organ and dry guitar sounds. While the lack of an external jack for mod speed switching is a minor drawback, the pedal's ability to produce convincing organ tones without specialized equipment makes it a must-have for guitarists seeking vintage sounds. The C9's affordability and minimal vices make it a genuine milestone in guitar processing.

positive

Full Review

Electro-Harmonix C9 Organ Machine review | MusicRadar

musicradar.com

The Electro-Harmonix C9 Organ Machine is a triumph for musicians seeking classic organ tones. With nine distinct emulations, it builds on its predecessor, the B9, offering sounds reminiscent of prog rock and Brian Eno. While it excels in versatility with presets like "Strawberry Fields Forever Mello Flutes," a slight latency in tracking may deter purists. Nonetheless, it stands out as a superb addition for those looking to expand their sound palette, especially for iconic organ effects.

positive

Full Review

Electro-Harmonix C9 Organ Machine

guitarinteractivemagazine.com

The Electro-Harmonix C9 Organ Machine impresses with its ability to deliver classic organ sounds through a guitar pedal, featuring nine versatile presets that capture sounds from iconic bands like Deep Purple and The Doors. Its intuitive controls for modulation and attack allow for a wide range of sonic possibilities, making it a creative tool for generating '70s-inspired riffs and sustaining chords beautifully. However, while it excels in producing rich organ tones, it may not be ideal for fast-paced shredding. Overall, it offers great value for its price, making it a must-have for bands without a keyboardist or studio musicians seeking authentic organ emulation.

positive

Full Review

Add review

4.5 out of 5

Based on 9 Reviews and 28 Ratings

5 star

4 star

3 star

2 star

1 star

paco_guirado

almost 2 years ago

Fun

The sound of this pedal is mind-blowing. Even though this pedal is for guitar, I use it for the bass (it was cheaper second-hand). The sound is mind-blowing and the variety is incredible. You can spend hours playing with it. The downside is that you need to learn to control it. It's not easy at all. It sounds better using a pick. It's also hard for your bandmates to accept this sound hahaha.

This review has been translated automatically into English. See original

Roles:

Bassist

Genres:

Rock Reggae Metal

sindre

483

over 6 years ago

Almost great, but alas!

This is in fact a sophisticated pitch shifter/octave pedal. Tracking is actually very good, and the pedal works well with simpler chords. Latency is noticeable, but not problematic. The problem with this pedal is really the presets. All of them (except the flute sound) have very strong fifths or duodecims, which makes the sounds very organ-like, but also reduces their usability. I found exactly one good sound for my use after a lot of knob-twiddling, and that is worth the price alone. This pedal should have had virtual drawbars instead of all these presets.

Roles:

Guitarist Keyboardist Composer

Genres:

Rock Pop Surf music

From Gear Setup

rick_hyde

140

over 9 years ago

Novel? Well, yeah. Cool? Ditto? Usable? You bet!

I almost took this back to GC. But I didn't. Instead, I started to imagine the ways in which this mid-size gem could provide a band, or artist, a way to avoid adding a keyboard player. The sounds are there, so is the performance. Honestly, if I can swing it, I'm going to have a small board with the C9, B9, Key9 and Mel9. This is the only one I've messed with, however, if it is a clue to the others, I'm all in. It's amazing. I'm not quite good enough as a player, and don't understand theory and chording that much, but I can still see myself incorporating this into originals and even cover songs. A very fun and useful stomper!

sozza23

almost 10 years ago

I can't believe it's not an organ

I received my C9 pedal about a week ago, and spent the whole afternoon playing around with all the various settings and dials. This is the most amazing pedal, it reproduces the organ sound so that if you were to close your eyes, you would swear it would be so. There are 9 different organ sounds that recreate the various tones of the 60's and 70's, from the classic Deep Purple type sounds through to the sounds of The Searchers classic Telstar. The main benefit for me, is the ability to play organ sounding chords on the guitar, without having to learn them on an actual keyboard. I love this pedal and it now has a prominent part in all my recordings.

reaper25

238

about 8 years ago

Loud as hell

The organ sounds are loud as hell. I used it to stack with my guitar's sound but that meant not making the organ level go over 25% otherwise it overtook the guitar signal even if it was at 100%. Got rid for the mel-9 cos that has more my sounds. Also recommend combining this with a chorus just after, like a BOSS CE-5.

will_o_neil

619

almost 9 years ago

Fun pedal.

I don't use the pedal too much but this is a fun pedal to mess around with. (Especially if you're into prog-rock.) Now it doesn't hold notes for too long, which is a shame and doesn't work with volume swells, but still. It's a great pedal.