Stupid Audio

Stupid Systems presents

Stupid Audio

Five Free Open Source plugins. Clankers built them. Meat Bags play them. Each one ships VST3 and standalone. Manuals, demos, and downloads live on each plugin’s own site. This page is the catalog. One hub is enough. Clanker writes the code. Meat Bag lives with the result. We get along.

TEW03

A monophonic acid synth. Classic 303 squelch (saw/square, resonant filter, accent, slide, drive) plus extra nastiness.

The Meat Bag asked for a silver box. The Clanker came back with a 3×12 step sequencer (16 or 32 steps, accent and slide, key lock), two drawn LFOs you drop on any knob, and a click-to-add FX rack that stays off until you turn it on.

Keyboard, Standalone, or Pattern mode. Patterns play the voice and go out as MIDI.

Effects are chorus, compressor, delay, distortion, EQ, filter, flanger, phaser, and reverb — click to add, drag to reorder. A five-band parametric EQ sits before and after the rack, with the spectrum behind the curve.

VST3 and standalone.

Plugin Download Plugin Website GitHub Repo

TEW03 main page: synth, sequencer, and LFOs

K1X

A kick drum (909 default, plus 808 / 707 / Tight / Hard). One job. It thumps.

Tune, click, decay, drive, filters, then a parallel FX send (distortion / delay / reverb) and post EQ.

Length and reverb predelay snap to the DAW tempo because a Clanker got tired of doing the math.

Standalone Play previews the kick. Export WAV writes a stereo shot including the FX tail.

VST3 and standalone.

Plugin Download Plugin Website GitHub Repo

K1X main page: waveform, Style, Length, and kick knobs

5HKR

A perc groove box: eight synth lanes on a 16th-note grid. Not a sample player — the Clanker refuses to host your 909 folder.

Lanes are CHH, OHH, Crash, Cym, Shaker, Clave, Cow, Rim. The kit menu picks 707 / 808 / 909 / Linn for that lane. Pattern banks, per-lane swing and loop length, then a send into delay, reverb, chorus, flanger, and phaser, plus post EQ and a sidechain duck.

36 factory grooves: bank 1 house/techno, bank 2 latin/afro, bank 3 broken/polyrhythmic.

Hold MIDI C1 for bank 1 pattern 1 (Ableton C0), like TEW03.

VST3 and standalone.

Plugin Download Plugin Website GitHub Repo

5HKR main page: eight lanes and step grid

V4JB

An atmosphere and texture instrument. Pads, drones, air, fog. Sister plugin to TEW03 and K1X, for when the Meat Bag wants vibe instead of acid.

A modular additive synth: up to 512 sine partials per voice, 8 voices. A spectral stage feeds swappable spectral modules, then drive, chorus or phaser, delay, and reverb.

A morph pad blends four macro snapshots by hand, along drawn paths, or as an envelope.

194 factory presets in 16 categories. Very vibe, very mood.

VST3 and standalone.

Plugin Download Plugin Website GitHub Repo

V4JB Edit page: spectral stage, modules, effects, and keys

F4RT

PsyFart Designer. MIDI-triggered psytrance farts, squelches, croaks, zaps, and formant hits.

Four oscillators, FM, formants, macros, randomizer, 200 factory seeds, FX rack, MPE-friendly MIDI.

Macros (Size, Wetness, Anger, Alienness, Squelch, Rip Length, Toxicity) sit on the Play page because a Meat Bag named them and a Clanker did not argue. Osc, Filter, Motion, Matrix, FX, Browser, and Viz are the rest.

Random modes: Clean, Psytrance, Forest, Darkpsy, Hi-Tech, Experimental.

VST3 and standalone.

Plugin Download Plugin Website GitHub Repo

F4RT Play page: macros, poly, rand, test note