Distortion

Dirt Lab

€4.90$5.90£3.90

VST3AUStandaloneCircuit-derived model

Dirt Lab puts eight of the most argued-about dirt circuits ever built behind one three-knob face. Four overdrives and distortions, two fuzzes, two boosts. Turn the Mode knob and the knob labels, the tapers, and the entire circuit underneath them change with it — no menus, no stacked plugins, no rebuilding your chain to try the next idea.

Dirt Lab’s eight modes:

OCD — open, amp-like overdrive that keeps pick attack, guitar volume, and chord detail intact from a nearly clean push all the way into thick saturation. An HP/LP switch sets the low end: HP for tight, focused rhythm, LP for a fuller bottom.
Rodent — silicon op-amp distortion with the famous reverse Filter control. Compressed midrange grind, sharp attack, and a filter that darkens or slices the whole rig in one sweep.
Tube OD — the green screamer voice. It only distorts above the low mids, so the bass stays tight and the mids jump forward. Always sits well in a mix.
Klön OD — the gold-box transparent overdrive. It blends your clean guitar back in with the overdrive, so it thickens and pushes without burying your dry tone.
PI Fuzz — the Big Muff Pi sound: endless sustain and a thick, scooped wall of fuzz.
War Fuzz — total mayhem, drawing its inspiration from the likes of Death By Audio’s Fuzz War. Its transistors run backwards on purpose, so there's no clean range anywhere on the knob: gated, sputtering, low-tuned collapse.
Treble Boost — a ’60s germanium treble booster. Tightens the lows and pushes the upper mids so a dark humbucker cuts. True to the hardware, it inverts phase.
JFET Boost — a discrete JFET preamp lift with a wide, three-dimensional projection, plus Bright and Fat switches for extra top-end chime or extra body.

Every mode is modeled from its circuit, so the way it cleans up, gates or sputters comes from the circuit itself, not an effect added afterwards. Each mode is level-matched at its default settings, so you can audition all eight without your volume jumping around.

Oversampling is per mode and set to Auto by default, which gives every circuit the factor it was tuned at. Override it in the footer when you want to trade CPU for a quieter top end, or the other way around.

Current version 1.2.0 (17 October 2026)

Schematic parameters

Selects which of the eight circuits is running: OCD, Rodent, Tube OD, Klön OD, PI Fuzz, War Fuzz, Treble Boost, or JFET Boost. This is a full circuit swap, not a voicing tweak — the three knobs are relabelled to that circuit's own pot names and re-mapped to its own component values. Switching is click-free, so you can audition modes while the track runs.

OCD and Fulltone, RAT and ProCo, Tube Screamer and Ibanez, Centaur and Klon, Big Muff Pi and Electro-Harmonix, Fuzz War and Death By Audio, Rangemaster and Dallas, EP Booster and Xotic are trademarks of their respective owners. Dirt Lab is an independently developed product and is not affiliated with, endorsed by, sponsored by, or licensed by any of those trademark owners. All other trademarks are the property of their respective owners.