Matter, a ferrofluid synthesizer with a hand-built Rust DSP engine. A living instrument that never sits still.

One ferrofluid blob, ten macro satellites. Nudge a gesture and it keeps evolving after you let go - macros bleed into one another and hand you sounds you'd never dial in by hand. Underneath: a Rust DSP engine, eight voices, and a ladder filter modeled in real time.

Play it free

The Instrument

No wall of knobs.
Just one living surface.

Matter Synth Interface
Matter Synth Interface

The Sound Engine

A Rust DSP engine, compiled to WebAssembly.

Dual polyBLEP oscillators, a 4-pole ladder filter, eight voices, sample-accurate timing. One engine runs everywhere: in the browser today, in the coming CLAP/AU plugin tomorrow. What you hear in a tab is what you get in your DAW.

Rust coreHand-written DSP
polyBLEPAntialiased oscillators
8 voicesTrue polyphony
Sample-accurateTight, deterministic timing
WASM-compiledSame engine everywhere

Features

A real synth under the blob.

Dual Oscillators

Two oscillators with hard sync, sub, and noise - polyBLEP-clean, full pulse-width control. The raw material, before you start sculpting.

4-Pole Ladder Filter

A Moog-style ladder that morphs continuously through low-, band-, and high-pass, envelope riding along. The classic squelch, modeled in real time.

Ferrofluid Visualization

An audio-reactive 3D blob ringed by ten macro satellites. Bass pulses it, highs scatter detail across its surface. Drag one and watch the sound change shape.

Effects Chain

Distortion, chorus, delay, and reverb you can drag to reorder. Rewire the signal path and the whole character shifts.

MIDI + Arpeggiator

Full MIDI mapping, seven arp patterns, CC learn, and plug-and-play Touché. Bring your own controller - it just works.

Presets & Sharing

30+ factory presets across bass, leads, pads, and textures. Save, load, and share your own patches.

Engines & Modes

You steer it. You don't program it.

Hover a satellite to explore its axis of expressionTap a satellite to explore its axis of expression

Macro Satellites

Ten axes of control

Ten macro satellites orbit the ferrofluid core - Brightness, Grit, Space, Shimmer. Each is an axis of expression; drag one and several parameters move at once.

Sphere Modes

See each mode in motion

One gesture moves a whole bank of parameters. Release a satellite and your gesture leaves residue - spring back, drift down, or lock in place - so the sound keeps evolving while you play.

Springs back

Free

The sound surges, then snaps home the instant you let go. Momentary, playable accents.

Engine Modes

How macros combine

The engine sets the math behind every gesture - four distinct ways your macros blend into one another.

Radial
Satellites blend smoothly by weighted distance from center.
Blend
Overlapping spheres dampen each other for nuanced interaction.
Dual
Strongest macro wins - decisive, immediate control per parameter.
Snap
Stacking with soft saturation. Pile macros on for wild textures.

Expressive Control

Expressive-E Touché

Matter integrates deeply with the Expressive-E Touché. Four pressure axes - up, down, left, right - reach straight into the ferrofluid: press, and the blob presses back. Six performance engines decide how those gestures become sound.

UPDOWNLR

Multi-macro

Each of the four axes drives its own macro, independently and at the same time.

Entropy engine
Touche drives autonomous Lissajous satellite motion - direction and speed straight from your fingertips.
Auto-detection
Plug in your Touche and Matter recognizes it instantly via Web MIDI - no setup, no mapping.

Plays Everywhere

macOSAU / CLAPSoon
WindowsCLAPSoon
LinuxCLAPSoon
BrowserWeb Audio, available now

Specifications

Matter, on paper.

Engine
Rust DSP core → WASM, sample-accurate, identical browser/plugin
Oscillators
2 osc saw/square/tri/sine, hard sync, PW, sub, white/pink noise, polyBLEP
Filter
4-pole ladder, continuous LP/BP/HP morph, dedicated env
Envelopes
2 ADSR per voice
LFO
1 per voice, 4 waveforms
Voices
8
Effects
Distortion, chorus, delay, reverb - drag to reorder - plus auto-pan, limiter
Macros
10 gesture macros, spring/drift/latch
MIDI
CC learn, 7-pattern arp, native Touché
Presets
30+
Formats
Browser today; CLAP macOS/Win/Linux + AU macOS in development

FAQ

Questions, answered.

What is Matter Synth?

Matter is a polyphonic synthesizer built on a Rust DSP core compiled to WebAssembly. It pairs a Moog-style 4-pole ladder filter and dual oscillators with a real-time, audio-reactive 3D ferrofluid visualization you can drag to shape your sound, native Expressive E Touché support, and ten built-in macro satellites. A free browser demo is available today, with a CLAP/AU plugin on the way.

Can I try Matter for free in my browser?

Yes. Matter offers a free interactive demo you can play directly in your browser with no download or sign-up. It includes selectable oscillator waveforms, a resonant filter, amplitude envelope, an on-screen piano keyboard, computer-keyboard control, and full MIDI mapping for hardware controllers.

Does Matter work as a DAW plugin?

The CLAP plugin for macOS, Windows, and Linux - plus AU on macOS - is in final development and included with your purchase as a free update. You can buy Matter today, and the plugin build will be delivered to your license email as soon as it ships, letting you run the same instrument inside Ableton Live, Logic Pro, FL Studio, Reaper, Bitwig, and other DAWs. Until then, you can play the same engine as a free browser demo.

What makes Matter different from other synthesizers?

Matter combines a Rust DSP engine compiled to WebAssembly with a real-time 3D ferrofluid visualization, ten gesture macros, and native Expressive E Touché support. The same engine runs in the browser and in the upcoming CLAP/AU plugin.

How much does Matter cost?

Matter is a one-time purchase of $69, available now, that includes every feature - all oscillators, the ladder filter, the full effects chain, MIDI and arpeggiator, 30+ factory presets, and the WebAssembly DSP core - with free updates, delivered via a personal license file. The upcoming CLAP/AU plugin is included as a free update. There is no subscription.

What features does the Matter synthesizer include?

Matter includes dual oscillators with hard sync, sub and noise; a Moog-style 4-pole ladder filter with LP/BP/HP morphing; a reorderable effects chain with distortion, chorus, delay, and reverb; full MIDI mapping with a 7-pattern arpeggiator and CC learn; an audio-reactive ferrofluid visualization with ten macro satellites; 30+ factory presets; and a Rust DSP core compiled to WebAssembly.

Get started

Go find a sound you didn't plan.

Try the free demo in your browser - no install, no sign-up. Drag a blob and stumble into a patch you would never have dialed in on purpose.

Play it free