Sour Fuzz: An Analog Fuzz Pedal PCB

Sour Fuzz is a four-stage silicon fuzz pedal built using a fully analog transistor signal path. The circuit produces heavy saturation, long sustain, and a wide range of tones using a small number of components and a simple control set. There is no digital processing, no firmware, and no software involved—everything happens directly in the analog domain.

The design is intentionally straightforward. Instead of adding features or configuration layers, the focus is on predictable behavior and repeatable results. The pedal uses the familiar Sustain, Tone, and Volume controls, making it easy to dial in sounds without complexity.

To make the circuit practical for modern builds, the design has been adapted to surface-mount components. This allows a compact PCB layout and consistent performance across different builds, whether used for a single DIY project or for small production runs.

Sour Fuzz is supplied as a populated PCB only. Components such as the enclosure, potentiometers, audio jacks, DC power jack, wiring, and footswitch are not included. This gives builders full control over mechanical layout and enclosure choice.

The board is intended for DIY builders and small-batch pedal makers who want a solid analog fuzz design without unnecessary features. It is designed to be easy to build, easy to integrate into a standard pedal format, and easy to understand.