The MAS Effects PicoFuzz is a DIY fuzz pedal PCB kit, sold by the maker as a small soldering project rather than a finished pedal. MAS Effects describes it as "probably the world's smallest fuzz pedal, and a great opportunity to learn surface mount (SMD) soldering"1. For a player, that means the kit is aimed at the bench, not the board: you build it yourself, and the point of the exercise is practicing soldering the small surface mount components that modern pedal circuits use.
What the kit is
The PicoFuzz is a fuzz circuit on a small PCB, sold as a kit for SMD soldering practice. Surface mount (SMD) soldering means working with components that sit flat on the board rather than through-hole parts with legs, which takes a finer touch than a typical pedal build. MAS Effects frames the kit as a learning opportunity for exactly that skill1. The listed price is £1.00 GBP, with tax included and shipping calculated at checkout1.
The PicoFuzz is listed as sold out on the MAS Effects shop as of 26 October 20261.
PicoFuzz and StompFuzz
MAS Effects sells a second DIY fuzz project, the StompFuzz, and points PicoFuzz visitors to it directly: "Also check out the more versatile StompFuzz"3. The maker describes the StompFuzz as "a tiny, fun, and practical fuzz project" and, like the PicoFuzz, as "a great opportunity to practice your surface mount (SMD) soldering"4.
| PicoFuzz | StompFuzz | |
|---|---|---|
| Effect | Fuzz1 | Fuzz4 |
| Form | DIY PCB kit1 | DIY soldering project4 |
| SMD practice | Yes1 | Yes4 |
| Maker's description | "probably the world's smallest fuzz pedal"1 | "more versatile"1 |
Videos
MAS Effects
Questions
Is the MAS Effects PicoFuzz a finished pedal or a kit?
It is a kit, not a finished pedal. MAS Effects sells the PicoFuzz as a DIY fuzz pedal PCB kit, and the maker describes it as a great opportunity to learn surface mount (SMD) soldering, meaning the builder solders the small surface mount components themselves rather than receiving an assembled pedal.
Is the MAS Effects PicoFuzz still available?
No. As of 26 October 2026, the PicoFuzz is listed as sold out on the MAS Effects shop. The maker points builders to the StompFuzz, which it describes as the more versatile fuzz project, as a related alternative.
Where can I find the PicoFuzz build instructions?
MAS Effects points to its PicoFuzz page on GitHub, at github.com/mstratman/picofuzz, for more information about the project. That is where the maker directs players who want details on the build beyond the shop listing.
What is the difference between the PicoFuzz and the StompFuzz?
Both are fuzz projects from MAS Effects, and both are described by the maker as opportunities to practice surface mount (SMD) soldering. The difference the maker itself draws is scope: MAS Effects calls the StompFuzz the more versatile of the two, describing it as a tiny, fun, and practical fuzz project.
