DOOM 2 is an original fuzz circuit that turns your input signal into something resembling a sawtooth wave. Unlike most fuzz-style circuits, DOOM 2 responds to your playing technique and retains note dynamics . This opens up a range of uses beyond that of a conventional fuzz. Low gain settings produce the harmonic texture of a vintage synthesizer. The power and presence of a key bass is now available in the analog domain.

No circuit changes for 2024. HIGH GAIN MOD available on request.

3 Leaf Audio

Demo by Gregor Fris

Official Product Video

Product Page

Review by Bass Musician Mag

Review by guitar pedal X

Doom 2 (blood red)

DOOM 2 is an original fuzz circuit that turns your input signal into something resembling the sawtooth wave of a vintage synthesizer. Unlike most fuzz-style circuits, DOOM 2 responds to your playing technique and retains note dynamics.
New for version 2 is the you’re / your switch. You’re is the classic DOOM sound - strong upper harmonics, a mid-focused sound, and octavia / ring modulator effects as you play up the neck. Your is a new mode that has a stronger fundamental, more low end and fewer harmonics. This mode sounds more like a traditional fuzz.

Demo by BAssTheWorld

Doom 2

Proton MK4

Official Website

Doom 2 Gray (mat white fluorescent)

The 3 Leaf Audio Groove Regulator claims to be one of the most versatile envelope filters on the market today. Its circuit is derived from the infamous and discontinued Lovetone Meatball. The large frequency and dynamic range makes it equally suitable for bass, guitar, keyboards or synths, samplers and general studio use.