Pricing and availability
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Price
Average Price: $133
Standard/Professional
$60
$181+
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Budget
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Price History
Based on price data from 1 merchant for "Keeley Moon Op Amp Fuzz". Prices shown reflect NEW condition. Tracking began Apr 23, 2026.
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Description
Elevate your guitar's sonic palette with the Keeley Moon Op Amp Fuzz pedal, a powerhouse for musicians who crave a distinctive and versatile fuzz experience. Designed to deliver a massive sound via its innovative 4-way op-amp configuration, this pedal offers a unique blend of vintage warmth and modern edge. With intuitive controls for level, filter, and fuzz, you can sculpt your tone to perfection, whether you’re aiming for a full-bodied roar or a subtle, textured growl.
The Keeley Moon Op Amp Fuzz is not just about brute force; it also offers nuanced control thanks to its filter toggle switch, which lets you effortlessly switch between flat, full, and scooped EQ settings. Its robust metal housing ensures durability, making it a reliable companion for gigs and studio sessions alike. Plus, with true bypass technology, your signal remains pristine when the pedal is disengaged, preserving the integrity of your sound.
Key Features:
- Massive sound thanks to 4-way op-amp design
- Controls for level, filter, and fuzz
- Filter toggle switch for flat, full, and scooped EQ settings
- True bypass for uncolored signal
- Durable metal housing
- Input and output: 6.3 mm mono jacks
- Powered via 9V battery or optional 9V DC power supply (not included)
- Power consumption: 10 mA
- Made in USA
Product specs
| Brand | Keeley |
| Model | Moon Op Amp Fuzz |
| Finish | Black, Buck Moon, White / Glow-in-the-Dark |
| Year | 2022 - 2025 |
| Made In | United States |
| Categories | Fuzz Pedals and Effects |
| Pedal Format | Standard |
FAQs
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What type of fuzz tones can I expect from the Keeley Moon Op Amp Fuzz?
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The Keeley Moon Op Amp Fuzz delivers a rich, aggressive fuzz tone with a unique character, ideal for achieving thick, saturated sounds that cut through a mix, particularly suited for rock and alternative genres.
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How does the Keeley Moon Op Amp Fuzz differ from traditional fuzz pedals?
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Unlike traditional fuzz pedals, the Keeley Moon Op Amp Fuzz uses op-amp circuitry to provide a more consistent and stable fuzz sound with enhanced sustain and clarity across different playing dynamics.
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Is the Keeley Moon Op Amp Fuzz pedal suitable for bass guitar?
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Yes, the Keeley Moon Op Amp Fuzz can be used with a bass guitar, offering a full-bodied fuzz effect that maintains low-end clarity, making it suitable for bassists seeking a powerful, cutting fuzz tone.
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What power supply does the Keeley Moon Op Amp Fuzz require?
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The Keeley Moon Op Amp Fuzz requires a standard 9V DC power supply with a negative center pin, which is typical for most guitar pedals.
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Does the Keeley Moon Op Amp Fuzz pedal have any tone-shaping controls?
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Yes, the Keeley Moon Op Amp Fuzz features intuitive tone-shaping controls that allow you to adjust the fuzz level and tone, giving you the flexibility to dial in your desired sound.
Videos
Reverb
Keeley Electronics Moon Op Amp Fuzz | Tone Report Demo
Reviews
PROS
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Not noisy, allows for quiet operation
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Versatile tone adjustments from minimal buzz to heavy fuzz
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Exceptional for shoegaze and post-rock genres
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Glow-in-the-dark feature adds unique aesthetic
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Works well with both single coils and humbuckers
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Offers a thicker low end compared to similar pedals
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Extremely loud, suitable for bold soundscapes
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EQ modes provide a wide range of sonic experiences
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Complements other effects like the Keeley Realizer well
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Maintains clarity and detail even in dense mixes
CONS
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Might not suit those seeking a vintage fuzz sound
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Keeley Moon Op Amp Fuzz.
Features and functionality
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The pedal's Filter Knob below 12 o'clock results in a muddled sound, and it's noted that when turning down the guitar's volume, the sound loses clarity.
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The pedal is designed to fit anywhere in the signal chain and works well after a drive pedal, adding a new dimension to its sound.
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The Moon Op Amp Fuzz is noted for its thick, bass-heavy sound with a wealth of harmonics, making other pedals sound thin by comparison.
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Despite a similar basis, the Moon Op Amp Fuzz is distinguished from the Keeley Dark Side by additional Op-Amps for increased gain and low-end enhancement.
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The Moon Op Amp Fuzz offers better control over mid-range frequencies due to its filter knob and selector, providing users with more tonal flexibility.
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Comparisons
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Compared to the JHS Muffuleta, the Keeley Moon Op Amp Fuzz has fewer tonal options and is more bass-heavy, making the latter more suitable for stoner metal.
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While the pedal delivers a Gilmour-inspired sound, it doesn't achieve the "Dark Side of the Moon" or "Siamese Dream" tones effectively, being better suited for modern rock fuzz.
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The Keeley Moon's bass-heavy sound is contrasted with the Swollen Pickle's ability to dial in more mids, making the latter more suitable for lead tones.
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The Moon Fuzz's unique low-end chugging ability is highlighted, though some prefer the Op Amp's better EQ and tonal adjustability.
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It's compared to Fuzz War, Acapulco Gold, and Hizumitas, with users stating that the Moon Op Amp Fuzz surpasses them in heaviness and quiet operation.
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Use cases and applications
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The pedal is reported to excel with bass guitars, but users should manage volume levels carefully to avoid overpowering the signal.
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The Keeley Moon is praised for delivering an aggressive, heavy fuzz ideal for "blowing out the windows" with its weighty low end.
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The pedal is praised within the doom/stoner/sludge community, although it's observed that Keeley is not typically associated with heavy music genres.
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Mods and upgrades
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Pairing the pedal with a Java Booster enhances clarity and retains upper note clarity in chords, despite its inherent bass-heavy nature.
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Critic Reviews
5.0 out of 5
Based on 1 Review and 2 Ratings
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Similar
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