Groove synth · Native Rust 64-bit DSP

PHASEBURN ONE

A groove synth: four oscillators led by a Phase-Locked Loop (PLL), a probability sequencer that plays them like a player, and a 64-bit effects rack. Play it, drive your other instruments over MIDI, or insert it on a track as an effect.

Open beta — available now v1.0 release 15 October 2026

Free while in beta · €149 at launch

VST3 · CLAP · Standalone · macOS · Windows — AU on macOS

Phaseburn One oscillators page with the PLL section on its MACRO lens: MULTIPLIER, GRIP, FIGHT, COLOR and WIDTH as five large dials with named scale marks
Phaseburn One oscillators page on its ADVANCED lens: the Phase Locked Loop knob field, the sub, the morphing and vector oscillators, and the volume envelope on its own tab
Phaseburn One PLL LAB view: the lock map with its ratio tongues and a pinned operating point, the scope and orbit panes, the winding trace and the discriminator plot
Phaseburn One mixer page: per-module channel faders, a goniometer stereo-image scope, and a routing patchbay where the modules, two high/low-pass filters and the master are wired by patch cables
Phaseburn One FX page: a two-filter section on its FILTER 1 tab, distortion, chorus, delay, reverb, bitcrusher and freezer, and a Master EQ with TONE, LOW, MID and HIGH tabs
Phaseburn One modulation page: LFO 1 to 3 with their waveform pickers and EDIT chips, note strength, velocity, aftertouch and filter-envelope modulators, the compact LFO 4, and one of the four bipolar step modulators
Phaseburn One LFO Editor: a searchable shape catalog on the left, the LFO rate, phase and destination strip along the top, and a full-width breakpoint editor holding a drawn curve with smooth, stepped and bent segments over a 32-column grid
Phaseburn One Groove page, Notes tab: a live bar preview above the note, octave, arpeggio, oscillator and perform modules, each with its own chance, strength and length controls
Phaseburn One Groove page, Beats tab: per-slot probability bars with swing, length, velocity and position groove tools
Phaseburn One preset browser: factory and user banks with favorites and sequence tags
Macro Four macro dials over the loop, each tuned by ear
Oscillators Phase-Locked Loop, MORPH and VECTOR, side by side
PLL Lab Where the loop locks, slips or runs chaotic — drag to play
Mixer & patchbay Faders and a stereo scope — patch cables below
FX Two filters, six effects and a Master EQ, each a patchable node
Modulation Four LFOs, note modulators, four step modulators
LFO Editor Draw the LFO — breakpoints, bends and held steps
Groove · Notes A scale-aware note pool — and a preview of every bar
Groove · Beats Chances, not steps — every bar is a fresh draw
Presets Factory and user banks, favorites, tags, import and export
1 / 10
  • Four oscillators, the Phase-Locked Loop first — four macro dials to play it
  • A probability sequencer that plays them — every note out as MIDI
  • A 64-bit effects rack with an audio input — insert it, or send to it
In the press All coverage →

“Fuzzy, noisy, dirty in a good way, and not quite perfect, just as you’d expect from a classic synth.”

Synth Anatomy ↗

“Locked, it’s precise, weighty bass. Pushed, it glides, overshoots and slips into controlled chaos no ordinary oscillator can make.”

Time To House ↗

“The result is a part that stays in key but never repeats exactly, which is a productive way to write evolving arps.”

Dubspot ↗

“Instead of smoothing out the loop’s behaviour, the two-person team makes overshoot, locking and jitter the instrument’s central sound element.”

AMAZONA.de ↗ Translated from German

“When the tracking stays precise, Phaseburn One’s sound comes out clean while keeping a shifting texture.”

Audiofanzine ↗ Translated from French

“The loop itself has become the instrument.”

Onemusic ↗ Translated from Hungarian

“Sound design ranges widely, from heavy basses to smoothly evolving sounds to complex modulation.”

project of napskint ↗ Translated from Japanese

“PLLs are not new, they have appeared before as modules and effects, but as far as we can tell nobody has built a whole instrument around one.”

MatrixSynth ↗

“One oscillator listens to another and keeps trying to match it, and the interesting part starts where it fails.”

rekkerd.org ↗

“…giving a one-of-a-kind timbre.”

Midifan ↗ Translated from Chinese
1 / 10
Demo

Every sound here is Phaseburn One

One track, 1:24 — layered instances as the instruments and as the effects, drums included. No other synth, no outside processing.

Demo Layered Phaseburn One instances only — instruments, effects and drums.
Hear it

From classic to genuinely strange

Every clip is Phaseburn One alone — no external processing.

Electrical Experiment
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Moth Museum
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Tape Loop Mantra
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The Long Goodbye
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Contact
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Run Through The Forest
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Dirty
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Box With Worms
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Drumloop
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Teebeedom
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Lost Dance
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PLL Jukebox
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Late Bus
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PLL Oda
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Destroyed
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Fireflies
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Gameboy
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Short Legs Jump
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Ambulance
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Song
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Heavy Duet
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Blues Shaffle
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Apple Jam
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Cyberpunk Streets
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Guessing
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Street Beat
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K-hole
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Minimalisto
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Banjo
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Why it’s different

Four reasons producers pick it up

The voice

Four oscillators, PLL first

A Phase-Locked Loop (PLL) — a radio control circuit turned into an oscillator — opened by four macro dials, beside VECTOR, MORPH and a sub. From locked, weighty bass to gliding, controlled chaos, with the PLL LAB lock map to see the loop live, and width built at the source: left and right generated independently.

The groove

A sequencer that plays like a player

Dice between note lengths, not just on and off: a sixteenth, a quarter or a rest compete for the same beat. A Strength map tells every note where it is welcome, beat links hang fills off a beat, and every rolled note leaves as MIDI to drive any instrument you own.

The rack

An effects rack with an audio input

Two filters, six patchable effects and a master EQ, each on the voice’s 64-bit path. Every module is a node — cable series, parallel, even feedback taps — and AUDIO IN makes it an insert or a send: process your tracks, or let the PLL chase them.

The build

Engineered precision

64-bit synthesis core, oversampling, zero-delay filters, true-peak limiting. Native Rust — published research plus algorithms of our own.

In the box

Everything, at a glance

Engines
  • Phase-Locked Loop
  • Four PLL macro dials
  • PLL LAB lock map
  • Vector Phase Shaping
  • MORPH (12 modes)
  • Sub oscillator
  • True stereo path
  • Transient engine
Sequencer
  • Dice between note lengths
  • 3 grids in one bar
  • Strength map
  • Beat links: fills & ratchets
  • GENERATE groove generator
  • Arpeggio phrases
  • 17 scales
  • Key Trigger · Chord Follow
  • MIDI out to any instrument
FX
  • Two multimode filters
  • Frequency-shifting delay
  • FDN reverb
  • Granular freezer
  • 4-mode chorus
  • 4-archetype distortion
  • Bitcrusher
Master
  • Three-band parametric EQ
  • Brilliance exciter
  • Stereo width
  • Mono bass
  • Box cut
  • High-pass
  • True-peak limiter
Routing
  • Modular patchbay
  • Two HP/LP insert slots
  • Channel-strip high-pass
  • Audio input: insert or sidechain
  • Insert effect (VST3 · CLAP)
  • PLL locks to external audio
  • Feedback inserts
  • Repatch while it plays
Modulation
  • 4 cross-modulating LFOs
  • LFO Editor: draw your own shapes
  • 4 mod sequencers
  • 180+ targets
  • Aftertouch & velocity
  • MIDI learn
Phaseburn Music

Instrument № 1 of many

Phaseburn One is the first. More instruments and tools are in the lab — build notes, sound-design experiments and beta news land on the blog.

No slop

No AI in the sound. Every voice is built from published research and our own algorithms.

The generative tools run on plain music theory — written rules you can read, rolled by chance. The foundations come from open research; the character comes from algorithms of our own — the probability sequencer, GENERATE, the patchbay engine. Phaseburn One emulates nothing. It sounds like itself.

We credit the researchers whose published work the engine stands on:

  • Vector phase shaping Kleimola, Lazzarini, Timoney & Välimäki, 2011
  • Zero-delay-feedback / TPT filters after Zavalishin, “The Art of VA Filter Design”
  • Nonlinear ladder filter after D’Angelo & Välimäki, IEEE 2014
  • Antiderivative anti-aliasing (ADAA) Parker, Zavalishin & Le Bivic, 2016
  • 2nd-order antiderivative anti-aliasing Bilbao, Esqueda, Parker & Välimäki, IEEE SPL 2017
  • Parallel formant resonator bank after Klatt, JASA 1980
  • Hadamard feedback-delay-network reverb Jot / Stautner–Puckette lineage
  • Single-sideband frequency shifting classic Bode frequency-shifter technique
Open beta

Get in before launch

Free to use until October 15, 2026 — after that it keeps working as a demo until you register a perpetual, DRM-free license, which you can do any time. The full license goes free to ten beta users we pick, and shipping at least one of your presets in the factory bank earns you at least a solid discount — all at our discretion.

Free €149 one-time — on sale 15 October 2026

Join the beta → Explore Phaseburn One

No card required · perks and preset picks are at our discretion — the beta comes with no guarantees