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Average Price: $237

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$181+

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Description

The JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod is a fuzz pedal that brings a new dimension to your sound palette. Designed for guitarists who crave the iconic grunge and alternative rock tones, this pedal is a tribute to the distinctive fuzz sound that defined a generation. Featuring the legendary OpAmp circuitry, the Pumpkin Patch Mod stands apart with its unique ability to deliver a raw, aggressive, and sustaining fuzz tone that is both powerful and dynamic.

The pedal's design stems from a meticulous reimagining of the classic Big Muff Pi, injecting it with modern versatility while retaining the essence of its vintage roots. The custom Pumpkin Patch Mod adds a new layer of tonal control, offering enhanced midrange clarity and a more responsive attack, making it ideal for cutting through the mix in both live and studio settings. Whether you're chasing the gritty sounds of the '90s or looking to carve out your own sonic space, this pedal is your partner in musical exploration.

Perfect for musicians who value both tradition and innovation, the JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod is a testament to the enduring appeal of fuzz effects pedals. Dive into a world where every riff and chord resonates with character and intensity.

Key Features:

  • Classic OpAmp circuitry for iconic fuzz tones
  • Custom Pumpkin Patch Mod for enhanced midrange clarity
  • Responsive attack ideal for live performances
  • Suitable for a variety of musical genres
  • Durable construction for reliability on the road

Product specs

Brand JHS
Model Electro-Harmonix Op Amp Big Muff Pi Reissue with "Pumpkin Patch" Mod
Finish Black / Orange
Year 2018
Made In United States
Categories Fuzz Pedals and Effects
Pedal Format Standard

FAQs

What makes the JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod different from a standard Big Muff?

The Pumpkin Patch Mod offers enhanced tonal versatility with modifications inspired by the iconic sound used by Billy Corgan of the Smashing Pumpkins. This version features unique tweaks to the op-amp circuitry, providing a distinct fuzz character compared to the standard Big Muff.

Does the JHS Pumpkin Patch Mod version of the Big Muff Pi have true bypass?

Yes, the JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod includes true bypass switching, ensuring that your guitar signal remains unaffected when the pedal is turned off.

Can the JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod be used with a bass guitar?

While primarily designed for electric guitars, the Pumpkin Patch Mod can also be used with bass guitars, offering a rich and sustaining fuzz tone that complements bass frequencies well.

What power supply does the JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod require?

This pedal can be powered by a 9V battery or a 9V DC power adapter with a center-negative plug. An adapter capable of delivering at least 25mA is recommended for optimal performance.

Is the JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod suitable for live performances?

Yes, the Pumpkin Patch Mod is well-suited for live performances, offering a robust and dynamic fuzz tone that cuts through the mix, along with reliable true bypass switching for seamless operation on stage.

Living Room GD

Living Room GD

JHS Pedals EHX OpAmp Muff "Pumpkin Patch" Mod (demo)

Video thumbnail for JHS Pedals EHX OpAmp Muff "Pumpkin Patch" Mod (demo) by Living Room GD

JHS Pedals EHX OpAmp Muff "Pumpkin Patch" Mod (demo)

Living Room GD

Living Room GD

Video thumbnail for JHS Pedals EHX OpAmp Big Muff "Pumpkin Patch Mod" - demo by RJ Ronquillo by R.J. Ronquillo

JHS Pedals EHX OpAmp Big Muff "Pumpkin Patch Mod" - demo by RJ Ronquillo

R.J. Ronquillo

R.J. Ronquillo

Video thumbnail for Electro Harmonix OpAmp Big Muff Pi with JHS Pumpkin Patch MOD by gearmanndude

Electro Harmonix OpAmp Big Muff Pi with JHS Pumpkin Patch MOD

gearmanndude

gearmanndude

Video thumbnail for MY FIRST MUFF! JHS Pedals Pumpkin Patch Mod EHX Op-Amp Big Muff (Demo) by Jackson Brooksby

MY FIRST MUFF! JHS Pedals Pumpkin Patch Mod EHX Op-Amp Big Muff (Demo)

Jackson Brooksby

Jackson Brooksby

Video thumbnail for JHS Mod Shop PUMPKIN PATCH treatment to the Electro-Harmonix OPAmp Big Muff Fuzz Reissue by gearmanndude

JHS Mod Shop PUMPKIN PATCH treatment to the Electro-Harmonix OPAmp Big Muff Fuzz Reissue

gearmanndude

gearmanndude

Reviews

PROS

  • Captures iconic Siamese Dream Big Muff Tone perfectly

  • Huge sound with nice subharmonic frequencies for depth

  • Additional mid control enhances blend with stock tone

  • Highly customizable for a variety of fuzz sounds

  • JHS mod offers unique tweakability not found in stock pedals

  • Ideal for Smashing Pumpkins-style mellow, creamy fuzz

CONS

  • Gate feature can be intermittent, not replacing traditional noise gates

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod.

Features and functionality

  • The JHS mod adds a mid knob and gate settings for single-coil users, offering more control over synth-like square waves and reducing buzz without needing a noise reducer.

    Source
  • The middle "heavy" gate setting on the JHS mod is dependent on the sustain knob, offering a dying battery fuzz effect but only clamping noise briefly before it returns.

    Source
  • The gate toggle's middle position may sound stock to some users, suggesting a need for further modification or adjustment.

    Source

User experience

  • Some owners feel the JHS mod removes the IC “crunch” from the EHX Op Amp Muff, potentially making it sound congested and less stackable.

    Source
  • Owners report that the upper gate toggle on the JHS mod appears ineffective, simply boosting volume without clear functional change.

    Source

Comparisons

  • The EHX Deluxe Big Muff is noted for its extensive mid control and built-in noise gate, though it appeals less to those who prefer the raw IC sound of the stock Op Amp Muff.

    Source

Mods and upgrades

  • The JHS mod has been criticized for smoothing out the sound in a way that some users do not prefer, as it alters the core IC fuzz character.

    Source
  • A 100k linear pot for the mids reportedly provides greater tonal variety than standard setups.

    Source
  • LED testing with alligator clamps yields a slight volume boost only when clamping one LED in the circuit.

    Source

Setup and maintenance

  • Correct LED orientation is crucial for mod functionality, with cathode-to-anode soldering required in the circuit.

    Source

Critic Reviews

Electro-Harmonix OpAmp Big Muff Pi With JHS Pumpkin Patch MOD | Delicious Audio

delicious-audio.com
Add

4.5 out of 5

Based on 2 Reviews and 5 Ratings

5 star
4 star
3 star
2 star
1 star
T

5 out of 5

love this pedal I like the fact I can play anything but more specifically smashing pumpkins riffs with it. But overall nothing is wrong with it and its a good investment.

Roles:
josh_self

Best fuzz ever!

Everything about this classic fuzz pedal is tweakable with the JHS Pumpkin Patch Mod. Layer this a few times and you will have that classic Smashing Pumpkins' signature fuzz sound.

From Gear Setup

Artist usage

Add artist
See how Isaac Wood uses JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod

Isaac Wood

Singer, Guitarist

Black Country, new road

...
Verified via Photo

Can be seen on Isaac's board in this photo.

See how Ian Fowles uses JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod

Ian Fowles

Guitarist

The Aquabats

...
Verified via Photo

Ian Fowles showcases his use of the JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod in a post on Instagram. His caption praises the pedal and includes references to its iconic association with the Smashing Pumpkins and Billy Corgan.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod, it is most commonly used with the following gear.

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Community setups

Show yours
simon_john

simon_john

Gear IQ 225

josh_self

josh_self

Gear IQ 352

1 alternative for JHS Electro-Harmonix OpAmp Big Muff Pi Pumpkin Patch Mod, curated by the Equipboard community.

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