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JPTR FX Warlow

5.0 (2)

3 Critic Reviews

This product is Vintage or Discontinued

Find out who is using JPTR FX Warlow

4 wishlisted

16 saved

Page last updated Aug 11, 2025

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Description

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ONLY 10 IN ALTERNATE COLORS!

Gather round & feast your sense organs on our latest venture into a world more welcoming of color: the WARLOW.

This polychromatic set is our take and dedicated interpretation of an op-amp based, Pi-style fuzzstortion/distortiofuzz pedal which authentically captures the late 90s' Seattle-based grunge texture and tone. It incorporates high grade Burr-Brown chips and Germanium clipping diodes which bring about a very pronounced low end and a truly barefaced fuzz.

This aesthetic escapade is also an embrace of variety of tastes and their expression, as well as a dedication to the very colorful new experiences we have had over this last year. It is limited to 5 colors (each consisting of 10 units), and an additional 50 units in our classic grey metal enclosures.

Show your color and be part of the palette.

Product specs

Power	9V, 18V
Bypass	true bypass
Analog/Digital	analog

Videos

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Let's Play All

10 Big Muff Riffs | JPTR FX Warlow Fuzz Pedal Demo

Let's Play All

JPTR FX WARLOW - Is this this most BRUTAL OpAmp Muff ever?

60 Cycle Hum

NASTY! JPTR FX Warlow Fuzz!

Riffs, Beards & Gear

JPTR FX WARLOW // Fuzz Monstrosity

BassTheWorld.com

OpAmp Big Muff Pi Shootout

Eddie Clark

Time to retire the Big Muff Pi... JPTR FX WARLOW is the new FAVORITE!

TheGuitarGeek

JPTR TV - WARLOW Fuzz Monstrosity

JPTR FX

JPTR FX Warlow | Fuzz Monstrosity

Eric Merrow

JPTR FX Warlow Fuzz Monstrosity

Pedal of the Day

The LAST Fuzz You'll Ever Need! | @JPTRFX Warlow

lifeinsteadofjesss

JPTR FX Warlow: "False Blood"

JHS Fresh Clips

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about JPTR FX Warlow.

Features and functionality

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The Warlow includes internal switches for clipping type and tone stack adjustments, offering customization between Muff and RAT styles.
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The filter switch on some units has three positions, believed to include BMP tone stack and highpass/lowpass filters, though official descriptions are unclear.
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Comparisons

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The Warlow is described as more aggressive and saturated compared to other OpAmp Muffs and the Creamy Dreamer.
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User experience

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Some users find the Warlow's sound too midscooped and flubby, preferring the thicker tone of the standard OpAmp Muff.
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Several users report long wait times for orders and inadequate customer service responses, leading to frustrations and unresolved issues.
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Multiple users experienced issues with internal dip switches not functioning, adding to the challenges of customizing the pedal's sound.
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Some owners find the pedal too loud, requiring signal blenders to control volume effectively.
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Use cases and applications

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The Hoof offers total control over sound, making it suitable for cutting through band mixes, especially useful in punk and alternative rock settings.
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Build quality

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Some units have incorrect pot values installed, like B50k instead of B100k, affecting gain and causing usability issues.
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Reports of pedals arriving defective or breaking shortly after purchase, with issues like bypass problems and distorted ghost notes in clean tones.
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Mods and upgrades

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Swapping incorrect B50k pots for the correct A100k, B50k, and B500k values can resolve gain issues, but requires soldering skills.
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Critic Reviews

Why You Can’t Handle JPTR FX — The JHS Show

thejhsshow.com

JPTR FX is a quirky yet creative force in the pedal world, with the Warlow Fuzz touted as a "fuzz monstrosity" that's particularly effective for death metal. The aesthetic appeal of the pedals is strong, but the overwhelming number of knobs on models like the Fernweh Delay may deter those seeking simplicity. While Chris Jupiter's innovative approach leads to unique sounds, the sheer complexity might intimidate less experienced players. However, for those willing to experiment, the results can be rewarding. Ultimately, the review paints a picture of a brand that thrives on chaos and creativity, appealing to adventurous musicians, even as it acknowledges the potential pitfalls of its designs.

positive

Full Review

JPTR FX Warlow review on pedal-of-the-day.com

pedal-of-the-day.com

The JPTR FX Warlow Fuzz Monstrosity delivers a colossal sound, merging the best of classic Big Muff and ProCo RAT tones for a versatile fuzz experience. Its premium build and unique filter section allow for dynamic sound shaping, making it suitable for everything from grunge riffs to soaring solos. The rich history behind its design adds character, appealing to tone chasers looking for authenticity. However, its high gain may overwhelm less experienced players, and the limited color options might not suit every aesthetic. Despite these drawbacks, the Warlow stands out as a formidable addition to any pedalboard, promising to elevate your sound.

positive

Full Review

JPTR FX Warlow Fuzz | Delicious Audio

delicious-audio.com

The JPTR FX Warlow delivers a robust, low-end-heavy fuzz that captures the essence of '90s grunge, making it a worthy addition for fans of that era. Its use of high-grade IC chips and germanium diodes results in a pronounced fuzz tone that will appeal to many. However, its bulky enclosure might not be ideal for all pedalboards, and some users may find the tonal palette a bit limited for broader styles. Overall, while it excels in delivering that gritty grunge sound, players seeking versatility might want to explore further.

positive

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5.0 out of 5

Based on 0 Reviews and 2 Ratings

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Artist usage

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Nicky Palermo

Singer, Guitarist

Nothing

Verified via Photo

In the photo posted on band's ig you can see Nicky's pedalboard and one of the pedals on it is JPTR FX Warlow.

Genre Usage

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Used With

Based on how musicians on Equipboard use JPTR FX Warlow, it is most commonly used with the following gear.

Boss RE-20 Space Echo Delay Effects Pedals

Similar

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1 alternative for JPTR FX Warlow, curated by the Equipboard community.

Electro-Harmonix “Op-Amp” Big Muff Pi V4 Fuzz Effects Pedals

$75.00 - $418.65

8 available stores

5.0 (2)

Vintage or Discontinued similar sound

Inspired by the V4 Big Muff, as stated in the official product description: https://www.jptrfx.com/dirt-machines/

This polychromatic set is our take and dedicated interpretation of an op-amp based, Pi-style fuzzstortion/distortiofuzz pedal which authentically captures the late 90s' Seattle-based grunge texture and tone. It incorporates high grade Burr-Brown chips and Germanium clipping diodes which bring about a very pronounced low end and a truly barefaced fuzz.

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