The Jeds Peds Muff Fuzz kit is a DIY guitar effects pedal kit from Jeds Peds that recreates the classic EHX designed Muff Fuzz from the 1960s. Jeds Peds describes the effect as a much lower gain take on fuzz, giving out lovely low and medium gain tones, which places it closer to an overdrive-adjacent character than a full-on fuzz. The kit is supplied with a JP1590B enclosure, the one knobbed version, and you will need one knob for the build1.
Building it
Jeds Peds positions this as an accessible first project. The company calls it "a beginner level build it features our DIY friendly layout and board design", and backs that up with a detailed PDF build guide, top quality parts and the availability of its build support forum1.
Soldering is required. Full assembly is the builder's job, and Jeds Peds is clear about what that involves: "You will have to identify components, calculate resistor codes and be able to solder them into place."1 A beginner should expect to learn component identification and resistor color codes as part of the project, not just iron parts into a board.
Pre Built Kits from Jeds Peds carry a 1 to 4 week build time, so ordering one assembled rather than building it yourself means waiting for the shop to get to it1.
Kit versions
The kit is sold in five versions, so you can buy as much or as little as you want to source yourself1:
| Version | What it includes |
|---|---|
| PCB Only | Just the plain PCB |
| PCB & Components | PCB, onboard components and any pots and toggle switches |
| PCB & Components and off board parts | As above with off board components (foot switch, Jacks, 9v socket, LED) |
| Full Kit | As above with undrilled enclosure |
| Full Kit & Drilling | Full Kit with all the holes for a complete pedal, for a small surcharge |
Drilling is an optional extra for the Full Kit. There is a small surcharge for it, and it covers all the holes needed for a complete pedal, so you can skip drilling the enclosure yourself if you would rather not1.
Where it sits in the Jeds Peds range
Jeds Peds sells several other DIY kits and pedals in the fuzz family, including the Jeds Peds Fuzz Face kit, the Jeds Peds Red Llama kit and the Jeds Peds Axis Fuzz kit, alongside ready-built pedals like the Jeds Peds Hyper Fluff and Jeds Peds Dark Meat Shed. The Muff Fuzz kit is the low gain option among them, described by the maker as a much lower gain effect than a conventional fuzz1.
Videos
Tom Burdett
Questions
Is the Jeds Peds Muff Fuzz kit good for a first build?
Jeds Peds describes it as a beginner level build, with a DIY friendly layout and board design. The kit comes with a detailed PDF build guide, top quality parts and access to the company's build support forum, which together make it approachable for someone building their first pedal.
What circuit is the Jeds Peds Muff Fuzz based on?
The kit compares to the Muff Fuzz by EHX, the classic Electro-Harmonix design from the 1960s. Jeds Peds describes the effect as much lower gain than a typical fuzz, giving out lovely low and medium gain tones.
How many knobs does the Jeds Peds Muff Fuzz have?
One. The kit is supplied with a JP1590B enclosure, and Jeds Peds notes that this is the one knobbed version. You will need one knob for the kit.
Does the kit come drilled?
The Full Kit includes an undrilled enclosure. Drilling is an optional extra for the Full Kit, with a small surcharge, and covers all the holes needed for a complete pedal.
How much is the Jeds Peds Muff Fuzz kit?
Jeds Peds lists the kit at £26.00 GBP as of 26 October 2026.
Do I need to solder to build the Muff Fuzz kit?
Yes. Full assembly is required: Jeds Peds says you will have to identify components, calculate resistor codes and be able to solder them into place.
Sources (1)
- Muff Fuzz, Jeds Peds
