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Electro-Harmonix KEY9 Electric Piano Machine

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Electro-Harmonix KEY9 Electric Piano Machine

^# 28

Equipboard's ranking is determined by analyzing factors such as professional artist usage, popularity, user ratings, reviews, and more.

$208.00 to $259.50 Price Tier: Standard

4.0 (6)

3 Critic Reviews

2 Reviews

Find out who is using Electro-Harmonix KEY9

3 community setups

20 wishlisted

45 saved

Page last updated Jul 03, 2026

Pricing and availability

We compare 600+ stores and found this item at 10 stores. Prices updated July 3, 2026.

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Reviews

Price

4.0 (22)

$259.50

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3.0 (8)

$259.50

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3.8 (106)

$259.50 New

$215.00 Used (Like New)

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4.0 (57)

$214.55 68 available New

$174.99 27 available Used

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3.0 (7)

$259.50

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3.0 (2)

$259.50

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5.0 (1)

$259.50

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4.1 (41)

$208.00

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£199.00

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3.0 (1)

$259.50

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Average Price: $241

Standard/Professional

$150

$601+

Price Tier

In the Guitar Synth Pedals category, Electro-Harmonix KEY9 Electric Piano 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 7 merchants for "Electro-Harmonix KEY9 Electric Piano Machine". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Electro-Harmonix KEY9 Electric Piano Machine brings an unrivaled variety of electric piano sounds right to your fingertips. This dynamic pedal not only emulates the world's most coveted electric pianos, but it also offers the possibility to mix your instrument signal with the effect sound. The KEY9 is a room full of vintage electric pianos neatly packed into a single pedal.

Whether you're after the classic Wurlitzer and Rhodes tones or the hot funk of a classic organ, the KEY9's nine meticulously crafted presets have you covered. Each preset lets you control the fundamental parameters that help define that instrument's sound, with many including adjustable modulation such as tremolo, phaser, and chorus.

Not content with merely emulating electric pianos, the KEY9 also offers the sound of a variety of percussion instruments, expanding the sonic palette of any guitarist. Blend your dry guitar signal into the mix in two unique ways – either directly on the pedal or utilise the dual outputs to set up more complex rig setups.

Key Features:

Transforms the tone of your guitar or keyboard
9 meticulously crafted presets emulating classic electric pianos plus more
Adjustable modulation features on many presets including tremolo, phaser, and chorus
Fast and flawless tracking
Dual outputs allowing for complex rig setups
Can be combined with the B9 and C9 Organ Machines for a complete keyboard rig for guitar
Includes a 9V Power adapter (9.6 DC-200 PSU)

Owner's manual

Electro-Harmonix KEY9 Electric Piano Machine User Manual

Product specs

Pedal Type	Electric Piano emulator
Inputs	1 x 1/4"
Outputs	2 x 1/4" (wet, dry)
Power Source	9V DC power supply (included)
Height	2.25"
Width	4.0"
Depth	4.75"

FAQs

What types of sounds can the Electro-Harmonix KEY9 Electric Piano Machine emulate?: The Electro-Harmonix KEY9 can emulate classic electric piano sounds, including vibes, marimbas, and organs, allowing guitarists to add keyboard-like textures to their playing.
Does the Electro-Harmonix KEY9 work with bass guitars?: Yes, the Electro-Harmonix KEY9 can be used with bass guitars, providing a unique way to expand the tonal palette of bass players with electric piano sounds.
What are the connectivity options for the Electro-Harmonix KEY9?: The Electro-Harmonix KEY9 features one 1/4" input and two 1/4" outputs, allowing for separate wet and dry signal paths for versatile routing options.
Is the Electro-Harmonix KEY9 compatible with standard pedalboards?: Yes, the Electro-Harmonix KEY9 is compatible with standard pedalboards, featuring a compact design and a 9V DC power requirement, which is included.
How does the Electro-Harmonix KEY9 differ from other guitar synth pedals?: The Electro-Harmonix KEY9 specializes in electric piano emulation, offering a range of keyboard sounds, whereas other guitar synth pedals may focus on a broader spectrum of synth tones.

Videos

Add video

EHX

Electro-Harmonix KEY9 Electric Piano Machine (EHX Pedal Demo by Bill Ruppert)

EHX

Electro Harmonix Key9 Electric Piano Machine Effects Pedal Demo

Sound Affects

Electro Harmonix Key9 | Review

Guitar Interactive Magazine

Electro-Harmonix Key 9 Electric Piano Machine Demo

jinjxmusic

Electro Harmonix - Key 9 Full Demo

DuncanAndrewsMusic

Electro-Harmonix Key9 Electric Piano Machine Review by Sweetwater

Sweetwater

Electro-Harmonix Key 9 Electric Piano Machine | Reverb Demo Video

Reverb

Electro-Harmonix Key9 Demo with Ed and Patrick on Rhodes

MooreMusicGuitars

EHX Key 9 Electric Piano Machine by Electro-Harmonix

intheblues

Can this pedal makes a Fender Rhodes sound like a Wurlitzer? The EHX Key9

Dean Coyle

Reviews

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PROS

Inspires creativity in the music-making process
Some presets provide spot-on emulation of classic keyboards
Tracking is solid, especially with quick licks
Versatile, with settings that are usable live and in studio
Simple to use, no special pickup or 13 pin cable required
Adds a new dimension to solo performances and recordings
Can emulate a classic Fender Rhodes electric piano realistically
Sturdily built, promising durability

CONS

Some presets lack definition and can sound muddy
Requires adjusting playing style for optimal sound output
Latency issues, with noticeable delay between playing and sound output
Inconsistent sound emulation across its range of effects
Some strange noises reported, even when bypassed in pedal chain
Not all presets are useful, leading to unused settings
Expensive for the value offered by the number of usable sounds

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Electro-Harmonix KEY9 Electric Piano Machine.

Use cases and applications

0 0

To achieve a realistic electric piano sound, play with fingers instead of a pick to soften attack, emulating keyboard techniques.
Source
0 0

The pedal shines with electric piano settings like Rhodes and Wurlitzer, while steel drums are perceived as less useful.
Source
0 0

Running a keyboard through the EHX Key9 can yield pleasing Rhodes/Wurlitzer tones, but the sound may sustain unfavorably for some users.
Source
0 0

The Key9 can be an alternative for those waiting on back-ordered Yamaha Rhodes, especially when paired with an existing keyboard for control.
Source
0 0

Owners use Splitters and DI setups to better integrate the Key9 with live rigs, allowing for more nuanced blending of guitar and pedal output.
Source

Features and functionality

0 0

The pedal lacks a tone control, so using a brighter guitar tone can help compensate for its darker tones.
Source
0 0

The Key9 synthesizes rather than samples tones, causing a small latency due to signal processing, which can affect live play dynamics.
Source

Setup and maintenance

0 0

The Key9 requires a 9.6V power supply to function optimally; some users report issues with power supplies like Strymon Zuma due to a slow ramp-up design.
Source

Comparisons

0 0

The C9 pedal experienced similar power issues, but the POG2 did not, indicating potential compatibility problems with certain power supplies.
Source
0 0

Some users find even budget keyboards around $200 can effectively produce Rhodes or Wurlitzer sounds, questioning the necessity of the Key9 for this purpose.
Source
0 0

Users mention the POG, Superego, and a volume pedal as alternatives for synth-like sounds without trying to mimic keyboards.
Source

User experience

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Some users find the piano sounds too subtle and low in the mix, making them less convincing and more guitar-like.
Source

Value and pricing

0 0

Some musicians suggest budget keyboards, like the Casio CTK series, can offer similar Rhodes and Wurlitzer sounds for less than the cost of the pedal.
Source

Critic Reviews

Electro-Harmonix Key9 Electric Piano Machine review

guitar.com

The Electro-Harmonix KEY9 Electric Piano Machine impresses with its ability to emulate classic keyboard sounds, from Fender Rhodes to Wurlitzer, through a simple, user-friendly interface. Offering nine versatile presets, it's a compelling choice for guitarists looking to expand their sonic palette without a keyboardist. However, the pedal's performance can be finicky with certain guitars, and caution is advised when using distortion. Despite minor quirks, its excellent tracking and intuitive controls make it an enjoyable tool for live performances, particularly for cover bands aiming to nail diverse musical styles.

positive

Full Review

Electro-Harmonix Key9 review | MusicRadar

musicradar.com

The Electro-Harmonix KEY9 Electric Piano Machine is a unique pedal offering a range of electric piano tones, but its appeal is somewhat niche. While it delivers some decent emulations of Rhodes and Wurlitzer keyboards, as well as a few unconventional models like vibraphone and steel drum, the overall sound quality is inconsistent. Certain sounds, such as the Dynamo and Suitcase, are impressive, yet others like the Wurlitzer fall short. Despite precise tracking, the pedal is slightly hampered by latency. Ultimately, it's a specialized tool that might not suit everyone seeking full keyboard textures.

neutral

Full Review

Electro–Harmonix Key9

soundonsound.com

The Electro-Harmonix KEY9 Electric Piano Machine is a hit for guitarists seeking electric piano sounds without the hassle of tracking issues common to guitar synths. Its nine presets emulate classics like the Fender Rhodes and Wurlitzer, with added effects such as tremolo and phaser for tonal versatility. The pedal is intuitive and guitar-friendly, though it demands a piano-like playing approach for authenticity—so forget about string bends. Some presets, like steel drums, might not be frequently used, but they add to its charm. Overall, it's a fun, versatile tool, albeit with a learning curve for optimal results.

positive

Full Review