Jen Jumbo Fuzz

This product is Vintage or Discontinued

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3 wishlisted

4 saved

Page last updated Jan 14, 2026

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Price

Average Price: $275

High-end/Boutique

$60

$181+

Price Tier

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

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Description

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Model 310.014 Jumbo Fuzz

Product specs

Power	9V
Bypass	buffered bypass
Analog/Digital	analog

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Vintage Stompboxes

vintage Jen Jumbo Fuzz

Vintage Stompboxes

Fuzz

OfficialHankIII

Jen Jumbo Fuzz trial II

Psych Up Melodies

Jen jumbo fuzz trial

Psych Up Melodies

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 Jen Jumbo Fuzz.

Features and functionality

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The gate in the Jen Jumbo Fuzz is controlled by Q6 shorting the AC signal to ground, driven by current from the +9V rail through R29.
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The Jen Jumbo Fuzz can be used interchangeably with other Big Muff style pedals, indicating its versatility and adaptability in various musical settings.
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Mods and upgrades

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Replacing D5 and D6 with point-contact germanium diodes, such as 1N21, can lower the forward voltage and potentially improve gate functionality.
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Adding a gain stage before the peak-detector Schottky diode-pair can increase signal strength, aiding in overcoming the higher voltage requirement of a silicon Q5.
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Comparisons

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The original Jen Jumbo Fuzz used a germanium Q5 with a lower Vbe compared to silicon BJTs, affecting how the gate circuitry operates.
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The Jen Jumbo Fuzz is similar to a slightly modified V1 Big Muff, with comparisons made to the Wren and Cuff Tri Pie '70, which offers a raspier tone but higher output volume.
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User experience

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Substituting Schottky diodes for germanium in the circuit may alter the sound to be harsher, highlighting the sensitivity of the gate mechanism to component changes.
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Use cases and applications

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It's noted that the Jen Jumbo Fuzz can replicate the lead tone on King Crimson's "Red," suggesting its effectiveness for achieving vintage progressive rock sounds.
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Artist usage

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Glenn Danzig

Singer, Guitarist

Misfits

Verified via YouTube

In thi video at 1:54 Danzig starts talking about the gear he used in Misfits. "I used a lot of old gear, old custom amps with big "15 and "18in speakers to get that big thick sound. Pedals too. I found the original dallas (something) jumbo fuzz that I used in The Misfits." Meanwhile while he's talking about the gear, pictures are being shown with the gear that he used in The Misfits days.

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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5 alternative and related items for Jen Jumbo Fuzz, curated by the Equipboard community.

Solid Gold FX Imperial MkII Fuzz Effects Pedals

$179.00

2 available stores

5.0 (1)

similar sound

From SolidGoldFX:

Inspired by the JEN Jumbo fuzz, which is one of our personal favorite vintage fuzzes, the Imperial MKII’s four sliders, textured black paint and bold red graphics shows you can immediately tell that this pedal means business.

So, what is the JEN Jumbo Fuzz and what makes it so awesome? JEN Elettronica was an Italian manufacturer who made pedals for Vox, Dallas Arbiter and Sound City (among others), in addition to making equipment under their own brand. The Jumbo Fuzz was their spin on the venerable EHX Big Muff® that swapped the knobs out for sliders and added a nifty germanium noise gate. In terms of sound, the tuning of the Jumbo Fuzz lies somewhere in the Ram’s Head camp - not overly scooped or woofy, with a nice gain range - just a great sounding pedal!

While the Jumbo’s noise gate is a great feature and gives this BMP variant a unique attack with practically zero noise, vintage units vary greatly from one unit to another, with some gating too much and others not at all. Capturing the Jumbo Fuzz’s vibe and redesigning the gate was essential to our Imperial redesign.

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Electro-Harmonix "Ram's Head" Big Muff Pi V2 Fuzz Effects Pedals