Fairfield Circuitry Four Eyes

4.5 (2)

This product is Vintage or Discontinued

Find out who is using Fairfield Circuitry Four Eyes

4 wishlisted

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Page last updated Jan 02, 2026

Pricing and availability

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Price

Average Price: $300

High-end/Boutique

$60

$181+

Price Tier

In the Fuzz Effects Pedals category, Fairfield Circuitry Four Eyes is priced in the High-end/Boutique range. This premium gear is built to very high standards and offers premium features.

Budget

Standard

High-end

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Description

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Dive into the gritty, rich tapestry of your sound with the Fairfield Circuitry Four Eyes, a fuzz effect pedal that doesn't just add texture; it weaves a whole new sonic fabric. Crafted for the guitarist who refuses to be boxed in by genre, this pedal offers unparalleled versatility with its parallel circuit design and a four position resonance switch, letting you dial in everything from warm, vintage tones to aggressive, modern fuzz. Whether you're fleshing out a garage band's sound or adding the finishing touches to a metal masterpiece, the Four Eyes stands ready to deliver, all while housed in a robust steel chassis that laughs in the face of rough gigs and pedalboard shuffles.

Key Features:

Parallel circuit design featuring three JFETs for a wide range of fuzz tones
Four position resonance switch to tailor the fuzz's texture and response
Triple drive pot section for precise control over the pedal's intensity
Durable steel chassis designed for the rigors of touring and studio use
Versatile enough to suit a variety of genres, from vintage to metal

Product specs

Brand	Fairfield Circuitry
Model	Four Eyes
Finish	Metal
Year	2010s
Made In	Canada
Categories	Fuzz Pedals and Effects

FAQs

What type of fuzz is the Fairfield Circuitry Four Eyes designed to produce?: The Fairfield Circuitry Four Eyes is designed to produce a multi-band fuzz effect, offering a unique and versatile sound that can be tailored for various tonal textures and styles.
How does the Fairfield Circuitry Four Eyes fuzz pedal differ from typical fuzz pedals?: Unlike typical fuzz pedals, the Four Eyes features a multi-band design that allows you to sculpt your fuzz tone across three separate frequency bands, providing greater control over your sound.
Can the Fairfield Circuitry Four Eyes be used with bass guitar?: Yes, the Fairfield Circuitry Four Eyes can be used with a bass guitar. Its multi-band design allows for effective tone shaping, making it suitable for both guitar and bass applications.
What power supply does the Fairfield Circuitry Four Eyes require?: The Fairfield Circuitry Four Eyes requires a standard 9V DC power supply, which is common for most guitar pedals and ensures compatibility with typical pedalboard setups.
Is the Fairfield Circuitry Four Eyes suitable for live performances?: Yes, the Fairfield Circuitry Four Eyes is suitable for live performances, offering a robust metal enclosure and intuitive controls that make it easy to adjust settings on stage.

Videos

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ProGuitarShopDemos

Fairfield Circuitry Four Eyes

ProGuitarShopDemos

Fairfield Circuitry Four Eyes Crossover Fuzz - DEMO

Victor Hugo Targino

Fairfield Circuitry - Four Eyes Fuzz

Dennis Kayzer

BassFuzz.com Presents: Fairfield Circuitry Four Eyes Fuzz

bassfuzzcom

Fairfield Circuitry Four Eyes Fuzz

Iga Massardi

Fairfield Circuitry Four Eyes

guitarmoderne

Fairfield Circuitry Four Eyes Fuzz

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Reviews

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PROS

Offers a wide range of great sounds, suitable for extensive tweaking
Ideal for bass, excelling even in drop tunings
Unique filter and triple fuzz circuit design for tailored sound
Thick, rich, and lush fuzz tones that clean up well
Highly touch responsive, adapting to playing dynamics
Versatile, works well with other pedals for new sonic directions
Frequency switch/knob enhances tone shaping capabilities
Compatible with an expression pedal for expanded control

CONS

Finding the perfect sound requires significant time investment
Discontinued, potentially limiting availability

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Fairfield Circuitry Four Eyes.

Features and functionality

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The "~900" has two cascading JFET gain stages, with interactive controls: Input, Bias, Fuzz, and Volume, impacting its tonal flexibility significantly.
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The Bias control on the "~900" allows for gating effects when turned up, adding a unique compressed, heavy sound to the fuzz.
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The Four Eyes splits signals into low, mid, and high frequencies, sending each to different fuzz circuits, enabling unique self-oscillation and ring modulation at certain settings.
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Use cases and applications

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The "~900" can reach grunge territory and is treated by some as a preamp distortion pedal, pairing well with MIJ Fender Mustang guitars.
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The pedal is ideal for those seeking experimental fuzz tones without additional octave effects, offering both classic and unique sound capabilities.
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User experience

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Initial impressions of the "~900" may be underwhelming, but owners often find a sweet spot that transforms their perception of its capabilities.
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Some users find that the Four Eyes doesn't clean up well, suggesting a focus on distorted rather than clean tones.
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Comparisons

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The "~900" is seen as a spiritual successor to the discontinued Four Eyes fuzz but offers a more focused and tighter fuzz sound compared to the Unpleasant Surprise.
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The Four Eyes can achieve sounds reminiscent of both the classic Muff and the treble-heavy characteristics of pedals like the Haunt.
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