GROT
The angriest little speaker you'll never blow up. One mix, one nasty box. Find out if it survives.
AU · VST3 · macOS & Windows · No subscription, ever
Push your audio through a small, cheap, angry speaker until the cone screams.
GROT is the Angry Box's evil twin. We spent years building a monitor that tells you the brutal truth about your midrange — then we bottled the worst-case scenario and gave it knobs. It's a mix-translation gut-check and a creative distortion weapon in one: bark, breakup, grime and crackle, all the way from “tasteful warmth” to “what did you do to it.”
Every Knob Is A Way To Make It Worse
Anger
The hero knob. Grabs the low-mids, compresses them until they bark, and drives the lot into an asymmetric saturator. Past 12 o'clock a parallel chainsaw layer ramps in — bright, fizzy, HM-2-flavoured buzz that turns a guitar into a war crime.
Damage
Mechanical speaker failure in three bands, with the midrange giving up first — exactly like a real cone. A slow random instability makes the drive wobble and spit, and the top end collapses the harder you push. This is the sound of a speaker losing the argument.
Filth
Years of abuse and zero maintenance. Gnarly low-mid console grime, sparse crackle, and subtle digital corruption, all keyed to your signal so it breathes with the audio instead of hissing over silence. Dirty, not noisy.
Box
Pick your nasty little enclosure: Grot Box (tiny, band-limited, mid-forward), Boom Box (port-resonant, all low end, no top), or Hifi (polished, with a little air). Smaller boxes get angry sooner. Bypass keeps the chain but skips the cabinet.
Cutoff + Res
A resonant low-pass on the way in, sweeping 20 Hz to 20 kHz. Roll off the top before it hits the wreckage, or crank the resonance for a squelchy, self-rattling honk. Tone-shaping for the broken.
Mix
Blend the carnage back against the clean signal. Built for parallel: slam a drum bus, glue a rage layer under a vocal, or sneak grit under a synth without losing the body. Default 100% if you came here to commit.
Does Your Mix Survive A Nasty Speaker?
The original Tantrum obsession, in plugin form. Slam your mix through the Grot Box voicing and find out what happens on a phone speaker, a kitchen radio, a laptop, a car with one working door speaker. If your vocal vanishes and your low end turns to mush, that's not GROT being unfair — that's the real world you forgot to check. Fix it here, before the internet does it for you.
Or Just Wreck Something On Purpose
Parallel-crush a drum bus until it breathes fire. Make a clean vocal sound like it's coming down a phone line from 1974. Reamp a DI through a dying boombox. Drop a rage layer under a synth and blend it in with Mix. GROT doesn't do subtle by accident — but it does do subtle, if subtle is what you want. The journey from clean to catastrophic is the whole point.
Broken On Purpose. Built Properly.
Dual-Mono, Image Intact
Left and right run independent degradation chains, but the internal level-match is linked across both — so however hard you push, the stereo image stays exactly where you put it. No drift, no collapse to the centre.
We Don't Flatter You
An internal level trim quietly matches the output back to the input as you crank, so you're judging tone, not loudness. Nothing here is 'better' just because it got louder — same philosophy as the Angry Box.
Usable On The Way In
Minimum-phase filtering and near-zero latency mean GROT is happy on a tracked element, not just a print bus. Reach for it while you're recording, not just when you're cleaning up afterwards.
AU · VST3 · Free
Universal on macOS (Apple Silicon + Intel) and VST3 on Windows. No licence key, no dongle, no trial timer, no subscription. Drop your email, get the installer, make a mess.
Go On. It's Free.
Drop your email, grab the installer, and find out how much your mix can take. We'll only get in touch when we've built something else worth breaking.
