Keeley Synth-1

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$152.15 to $219.00 Price Tier: Standard

5.0 (4)

2 Critic Reviews

All time low price

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Best Guitar Synth Pedals for Wild Creative Sounds

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Page last updated Jun 03, 2026

Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated June 1, 2026.

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Reviews

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3.5 (4)

$179.00

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5.0 (1)

$179.00 $152.15 $26.85 · All time low

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4.6 (31)

$179.00 $26.85 · All time low

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4.0 (18)

$169.00 21 available New

$100.00 14 available Used

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$179.00

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$179.00

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4.1 (14)

$222.00 $219.00 $3.00 · All time low

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£190.00

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Average Price: $166

Standard/Professional

$150

$601+

Price Tier

In the Guitar Synth Pedals category, Keeley Synth-1 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 5 merchants for "Keeley Synth-1". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Unleash a new dimension of sound with the Keeley Synth-1. This guitar-triggered, single-note wave generator allows you to blend your natural guitar tone with fuzzed-out synth waves, bridging the gap between conventional guitar effects and the outer reaches of experimental sound design. The Synth-1 offers seamless control over the tone of the wave, the swell of the note, and the blend of your guitar tone with the synth sound, making it a versatile tool for any musician looking to step outside their comfort zone.

Its Chaos switch provides an additional layer of sonic exploration, altering dimensional triggering and octaves for a truly unique sound. The Synth-1 also offers the option to control the Filter with an expression pedal, giving you wah-wah-like control and adding another level of expressive potential to your performances. Whether you're creating slow-gear reverse swells or crafting sounds akin to a lightsaber, the Keeley Synth-1 is your gateway to a world of uncharted tonal territory.

Key Features:

Guitar-triggered, single-note wave generator
Blend control allows you to mix your natural guitar tone with the synth sound
Filter control shapes the EQ and tone of your fuzz wave
Attack knob controls the lead-in time or swell of the note
Chaos switch alters dimensional triggering and octaves
Compatible with an expression pedal for wah-wah-like control of the Filter
Wave Selector allows you to change wave modes on the fly
Current Draw: 70mA
Designed and Made in the USA

Product specs

Pedal Type	Synth, Fuzz, Reverse
Analog/Digital	Digital
Inputs	1 x 1/4"
Outputs	1 x 1/4"
Other I/O	1 x 1/4" (expression)
True Bypass	Yes
Power Source	9V DC Isolated power supply (sold separately)
Power Usage	70mA
Height	2.09"
Width	3.6"
Depth	4.7"
Weight	<1 lb.

FAQs

What type of effects does the Keeley Synth-1 pedal generate?: The Keeley Synth-1 pedal generates synth, fuzz, and reverse effects, allowing you to create unique and experimental sounds with your guitar.
Is the Keeley Synth-1 suitable for live performances?: Yes, the Keeley Synth-1 is equipped with true bypass, ensuring your signal remains clear when the pedal is not in use, making it suitable for live performances.
Can I control the Keeley Synth-1 with an expression pedal?: Yes, the Keeley Synth-1 has an expression input, allowing you to control parameters dynamically during performances.
Does the Keeley Synth-1 work with a standard power supply?: The Keeley Synth-1 requires a 9V DC isolated power supply, which is sold separately, to operate effectively.
What kind of input and output connections does the Keeley Synth-1 have?: The Keeley Synth-1 features a single 1/4" input and a single 1/4" output for straightforward integration into your pedalboard setup.

Videos

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Reverb

Keeley Electronics Synth-1 Reverse Attack Fuzz Wave Generator | Reverb Tone Report

Reverb

Keeley Electronics SYNTH-1 | My New Favourite Pedal!!!

Rabea Massaad

Keeley Electronics Synth-1 Bass Demo w Aaron Boehler - Synthesizer and Slo Attack Settings

Keeley Electronics

Keeley Electronics Synth-1 Reverse Attack Fuzz Wave Generator Demo - Full Band / ISO Guitar

Keeley Electronics

Keeley Electronics - Robert Keeley talks about the Synth 1 Wave Generator / Auto Swell

Keeley Electronics

Keeley Electronics Synth-1 Reverse Attack Fuzz Wave Generator Demo

The Pedal Zone

First Look - Keeley Synth 1

Premier Guitar

Keeley Synth-1 Reverse Attack Fuzz Wave Generator

Mike Hermans

Keeley Electronics Presents: Synth-1 Warwick Bass Demo by Adam Aarts

Keeley Electronics

Keeley Electronics SYNTH-1: The Perfect RETRO Pedal for your Rig!!

Living Room GD

Reviews

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PROS

Produces a wide range of synth sounds with 3 different waveforms
Offers unique control over sounds with filter sweep knob and chaos switch
Responsive to playing style and dynamics, providing unexpected sounds
Compatible with other pedals, expanding sound possibilities
Robust build quality, ensuring durability for live and studio use
Can generate both subtle and extreme effects, suitable for various musical contexts
Expression pedal input for additional sound shaping capabilities
Encourages creativity and experimentation with sounds

CONS

No presets, may not suit those who prefer quick, predefined sounds
Might be too complex for beginners or those seeking simple plug-and-play operation
Tracking issues reported, particularly on lower notes and faster rhythmic playing
Some users find the pedal too unpredictable, even with chaos mode turned off
May produce unwanted noise or resonances at certain settings
Attack of the synth signal can be diminished, affecting the articulation of notes

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Keeley Synth-1.

Use cases and applications

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The Keeley Synth-1 excels when used with pitch shifters and filters like the Asheville Pattern, transforming it from a fun tool to an inspiring creative device.
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It's noted as a good bass synth option when blended into tracks, offering value for bassists seeking affordable synth sounds.
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The pedal provides a synth-like, fuzzy, octa-filter effect to guitar signals, offering a unique sound experience for players.
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Attempting to recreate key synth sounds with the Keeley Synth-1 can be challenging, prompting some users to explore integrating octavers and fuzz for more satisfying synth tones.
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Features and functionality

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An expression pedal significantly enhances the Keeley Synth-1, allowing for selective engagement of the synth tone, which users find crucial for its optimal use.
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The pedal operates on a digital DSP platform, contrary to some beliefs that it is analog, and it is mains-only due to its 70mA power consumption.
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Some users report poor tracking of low notes on bass, which may limit its utility for certain bass applications.
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User experience

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Initial use may yield "fart noises" for some players, but incorporating additional effects can elevate its usability and enjoyment.
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Users are drawn to the Keeley Synth-1 for its organic sound, preferring it over synth pedals from Boss, Digitech, Zoom, and Behringer.
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One owner encountered noise issues, necessitating the use of a loop master for true bypass to avoid unwanted noise when not in use.
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Mods and upgrades

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Adding an HX Stomp expands the Keeley Synth-1's capabilities, enabling more experimental soundscapes without the need for additional stompboxes.
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Comparisons

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The Keeley Synth-1 is often compared to the Pigtronix Mothership and Seymour Duncan Fooz, with users noting its digital nature versus the fully analog design of the others.
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A user found the Keeley Synth-1's tracking inferior, leading them to consider the Source Audio C4 as an alternative, though it was noted for its complexity and colder sound.
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Software and compatibility

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The Keeley Synth-1 is confirmed to work in polyphonic modes, though it is marketed as monophonic, adding versatility to its application.
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Critic Reviews

Keeley Synth-1 Review - Premier Guitar

premierguitar.com

While the Keeley Synth-1 boasts speedy monophonic synth tracking and an intuitive interface, its limitations are hard to overlook. The pedal's monophonic design means it struggles with complex chords, often resulting in chaotic glitches. Basic envelope control and a lack of resonance options further hinder its versatility. Although it can create some interesting sounds, especially for ambient effects, guitarists seeking consistent synth melodies may find it frustrating. It's a niche tool that excels in chaos but falters in precision, making it better suited for experimental players rather than traditionalists.

negative

Full Review

Review: Keeley Synth-1

guitar.com

Keeley’s Synth-1 serves up a delightful array of old-school synth tones in a compact package, showcasing three distinct waveforms that deliver a characterful and versatile sound. Its infinite sustain and solid tracking are notable highlights, especially when paired with an expression pedal for dynamic filter control. However, the blend control proves less effective with a clean signal, making it tricky to combine guitar and synth sounds seamlessly. While the Chaos switch adds a fun, glitchy edge, it may not satisfy all players looking for total sonic mayhem. Overall, the Synth-1 is a fantastic addition for those wanting to explore synth textures without losing their guitar identity, but it’s not without its quirks.

positive

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5.0 out of 5

Based on 0 Reviews and 4 Ratings

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