Bass FZ2 - The Heaviest, Black Hole, Star Exploding Octave Fuzz Unit Tuned For Low End

V3 is in the works. whats new?

Octave toggle instead of blend. This just works better, trust me.

FZ2 tone stack revoiced to the original except with an added mids control and LOW LOW.

Knob layout revamped to allow for 2 big ol knobs.

I’ve always been an FZ2 fanatic, and over time, I’ve designed nearly a dozen circuits orbiting this cult classic, each one a twist on the original, a new refraction of that iconic fuzz. But this one… this one is the apex.

The Bass FZ2, born from a long-distance engineering collaboration with Santiago from Guatemala, is sonic ritual, a gateway into strange, shimmering frequencies and tectonic walls of fuzzed-out chaos.

While it carries the name “Bass FZ2” this pedal is an eccentric companion to any instrument. Guitarists, bassists, noise synths, sonic explorers.

about its features and sounds. a bit of a long one since this pedal is expansive.

At its heart lies the core tone of the original FZ2, but I’ve expanded it into an uncharted territory of mayhem.

What I call the “Come My Fuzznatics” mods breathe extra life into the circuit. The addition of an additional octave up stage, cascading into the Super Fuzz-style octave of the FZ2.

Turn the octave toggle on, and the signal channels through two octave-up stages, slamming into each other like cosmic thunderbolts. The result? A metallic, unpredictable clang that feels like a lightning strike tearing the sky in half, while triggering a supernova explosion that wrecks chaos throughout the galaxy.

This pedal is especially versatile due to the fact that it has 3 unique modes. It practically is 3 separate effects in one box as it is naturally- mid scoop, mid boost, and clean boost modes offer entirely new universes of sound on their own.

Achieve this via the mode toggle

middle is boost- goes all the way from sparkly clean, to heavy overdrive/medium gain distortion. with the flexible tone controls you can dial in whatever frequencies you'd like to boost, effectively using this pedal as an EQ as well. In HM2 tone mode, with the boost toggle position activated, you can use any pedal before the bass fz2 to transform it into that nasty HM2 style sound- with the texture and character of your favorite drive.

down is mid scoop- makes your guitar sound like colossal waves of lighting and cosmic flares, has extremely interesting harmonic tones that evolve as the guitar signal decays.

up is mid boost - thick and crunchy, a lot more clarity and tight. in hm2 tone mode, it sounds eerily like an actual HM2

Keep in mind- this is not your clean tracking, harmonizing octave up. It is a green ringer style octave clang/ring, that sounds more like a ring mod, and really is more of a harmonic generator.

A second footswitch toggles between two wildly different tone shaping modes.

LED off is a 4-band EQ, keeping the classic bass and treble controls with an added mid control and LOW LOW control- for that rumbling bass and down tuned guitar.

This mode opens up a whole new tonal dimension, adding extreme frequency manipulation and shifting how the fuzz cuts and roars.

tap the left footswitch and the circuit transforms the EQ into an HM2 chainsaw voice, but with a twist—the original HM2 merged high and mid controls, but I’ve separated them here for maximum tonal flexibility, without sacrificing the chainsaw’s serrated glory. With the toggle down, you’ll discover brutal bursting metal shard HM2-style textures, seamlessly integrated with the FZ2 architecture.

ALSO- a clean blend, but not just any blend. This one’s featured, with a low-pass filter for the clean signal, a transparent gain control to properly match levels, and the freedom to mix crystal-clear dry signal melody with the dirtiest, gnarliest fuzz imaginable. You can place your clean tone in front of the fuzz like a beam of moonlight piercing storm clouds, or go full dirt for an engulfing wall of buzzing fuzz.

This isn’t just practical for bass. Sometimes, the FZ2’s ripping, unrelenting nature is so colossal that melodies can get buried. The clean blend brings clarity and contrast, allowing riffs and chord progressions to shine through the chaos. There’s something beautifully jarring about hearing a clean signal juxtaposed against an apocalyptic fuzz wall, it feels like finding a delicate crystal in the middle of a volcanic eruption.

I’ve also fitted the Bass FZ2 with silent, soft-touch footswitches, they are more reliable and abuse resistant, and simple to replace if ever needed. This works via relay based true bypass.