pi-Stomp Manual Plugins

Vintage Fuzz

If you need a fat, thick, controlled fuzz for solo work — the kind that stays warm and articulate rather than splatty or scooped — these plugins are the closest match on the device. Fuzz Face FM is our pick, with Fuzz Face JH-2 a close second.

Our pick: Fuzz Face FM

Fuzz Face FM

Fuzz Face FM is a transistor-pair Fuzz Face simulation with the Fuller Mods — extra INPUT and DRIVE controls that let you clean up the distortion and dial in subtle shades of softer drive. Crank the FUZZ for a full-on roar, or back it off for a gritty overdrive that cleans up when you roll back your guitar volume. A mid-present sound means it's ready to cut through the mix.

DRIVE FUZZ INPUT LEVEL
0.5–0.7 0.6–0.8 Unity To taste

This is the rare kind of plugin where chords remain articulate, even at high gains.

New to loading plugins? See Plugins & Effects for how to browse and add them in MOD-UI.

Also great: Fuzz Face JH-2

Fuzz Face JH-2

Fuzz Face JH-2 uses the same transistor-pair engine as FM, but trades the input gain stage and controls for extra saturation.

What you give up: Less flexibility in shaping the front-end saturation. A/B it against the FM to see which voicing suits your rig.

Also considered

GxKnightFuzz uses asymmetric clipping (separate lookup tables for positive and negative halves), which generates strong even harmonics — the right harmonic signature for a fat fuzz. It's a sampled-waveshaper approach rather than a full transistor circuit sim, so to our ears it sounds less "vintage germanium" and more "modern asymmetric fuzz." Points off for only INPUT + VOLUME controls.

GxFz1s is a Maestro FZ-1S model with symmetric clipping (more odd harmonics, buzzier) and mild bias-gating behaviour. It's a credible fat solo voice but the FZ-1S is mid-forward and harder than the warm controlled saturation we're after; the gating can lean toward splat at extreme settings.

Big Muff is the highest-quality circuit simulation of the set — full SPICE-style component modelling with oversampling and a true diode clipper. But it's a Big Muff: symmetric diode clipping (odd harmonics), scooped-mid tone stack, and violin-like sustain. That's the opposite of the fat, mid-present character we want. Use it when you want Gilmour/Smokey sustain.

Muff is only the Big Muff tone stack — a filter, not a fuzz. No clipping stage at all. Useless on its own for this use case.

Freakclip is a cheap waveshaper with a one-sample feedback delay and symmetric hard clipping. To our ears it sounds buzzy and static, with a weird resonant edge rather than fat warmth. Furthest from the vintage germanium sound.

Credits

Plugin Author License Homepage
Fuzz Face FM Guitarix team ISC guitarix.sourceforge.net
Fuzz Face JH-2 Guitarix team ISC guitarix.sourceforge.net
GxKnightFuzz Guitarix team ISC guitarix.sourceforge.net
GxFz1s Guitarix team ISC guitarix.sourceforge.net
Big Muff MOD Team GPL moddevices.com
Muff Guitarix team ISC guitarix.sourceforge.net
Freakclip Pjotr Lasschuit GPL github.com/pjotrompet