VST3 + AU · Windows · macOS · Linux · €15 one-time
A polyphonic virtual-analog synthesizer built specifically for psychedelic trance: TB-303 squelch, seven-voice supersaws, hoover stabs, FM bleeps and PWM pads — with a tempo-locked trancegate, a rolling arp sequencer, OTT multiband squeeze and an AI patch designer right in the header — offline by default, or your own Gemini/OpenAI key.
Release notes
GoaSynth-Setup-<version>.exe, attached to its GitHub release) instead of the product site.Download 1.6.0ZIP package·Installer·SHA-256 checksums·all files
The update dialog tells you what changed: release notes now travel in the version feed the plugin already fetches, and a View full change log link opens them in the browser.
A small, sharp release: the MENU gained Change Log, Check for updates always answers, and the About card is closable.
This update is about housekeeping you can feel: a header MENU with an About card and an update check.
The largest update the instrument has had.
The gate strip gained a SHAPE cell beside its steps: the hard SQUARE chop it always had, plus SMOOTH (half-cosine), SAW (instant in, linear fall) and TRIANGLE (sine rise, sine fall) — the contours the genre is built on. Step edges are ramp-smoothed, so the boundary between two steps stops clicking.
Note-offs are parked with absolute sample times and delivered by the block that contains them, instead of being clamped into the block that fired the note-on. A gate longer than one buffer is no longer truncated, and the STRUM fan keeps its 18 ms stagger at small buffer sizes. Every step has its own gate length (5–100 %, 75 % by default), and accents hold their gate longer as well as hitting harder.
The header meter now shows real per-channel peaks with peak-hold ticks — held for about 1.2 s, then falling at roughly 12 dB/s, the way a DAW meter behaves — instead of one gain-reduction strip, so you can see both sides of the image.
NOISE gained a White / Pink choice: white for brightness, hats and transients; pink for the −3 dB/oct tilt that reads as cymbal wash, air, wind and sea. Pink is a decorrelated Paul Kellet 7-pole pair — one filter per channel — so it stays stereo.
Inter-oscillator hard sync and ring mod, manual pulse width, and a three-band master EQ (low shelf, peaking mid, high shelf) with true bypass — and filter B cutoff and resonance, vowel morph, analog character, OTT depth and pump depth are all modulation destinations, so the deeper parts of the engine move like the rest of it.
A 32-step snapshot stack behind UNDO / REDO, two slots behind A/B, one-button RAND with musically bounded draws, and LOCK to keep the knobs you already like through all three. Drop a WAV on an oscillator and it is sliced into wavetable frames. Editor size, zoom and skin are remembered for next time.
The bank grew from 135 to 175 patches across nine families, and the browser was rebuilt around it: favourites that persist, AND search over names and tags, sort by A-Z / Z-A / newest / bank order, click to audition, double-click to load, and a right-click menu to rename, duplicate, delete or reveal.
NEON (cyan and hot magenta on black), PAPER (a real light mode) and OLED (pure black, one red accent) join UV Goa, steel and warm analog, and the whole interface zooms from 100 % to 200 % from the header or with Ctrl + scroll. The active step glows as it plays.
The factory bank is exposed to your DAW's program list, the arp can send its
notes out as MIDI to record or drive another instrument, and this release adds
AU / AUv3 on macOS and LV2 on Linux next to VST3. A pasted serial tolerates
cosmetic dashes, .goalicense files carry the buyer's name, and an instance
whose 24-hour trial runs out mid-session locks itself instead of waiting for a repaint.
Every build is fingerprinted as it is packaged, and the same numbers are published in downloads/SHA256SUMS.txt. Check them before you install: if a hash does not match the file you were sent, that file was damaged or replaced in transit, and support would rather hear about it than not.
fbc9a38GoaSynth-1.6.0-win64.zip — 12.2 MBf6e639b4f88c440d252fa5d18c87fd782b88344354d67c7f13fa24e4375e7ac95df94f2fa677f5a381884ef6b2ae2a6fc17200fa31c73a0017344314d7b40eba — the GoaSynth-Setup-1.6.0.exe installer inside the ZIP, 22,939,648 bytes9dd5ef0b272f2492081ac6ac58da43024861e6ed444a01b6c1b040decf4e2ecf — the GoaSynth.exe installed next to the plugin, 8,831,488 bytes — verify it after installingWindows: Get-FileHash .\GoaSynth-1.5.0-win64.zip -Algorithm SHA256.
macOS and Linux: sha256sum -c SHA256SUMS.txt in the folder you downloaded to.
The Setup hash is over the GoaSynth-Setup-1.5.0.exe inside the ZIP — the installer
that puts the plugin and the standalone app in place.
Overview
No ten-page manual for basic sounds. Everything is on one surface: the two oscillators, both filters and the sub across the top, the envelopes and LFOs beneath them, the FX row under that, and the sequencers, scale quantiser, pump and keyboard along the bottom — with the depth you don't need yet behind a single MOD button.
Saw, square, PWM, triangle, sine — or sketch your own 8-frame wavetable right in the display, or drop in a WAV and let it slice the file into frames. Up to seven detuned unison voices around both oscillators, plus sub, noise and analog drift, and inter-oscillator FM, hard sync and ring mod.
12/24 dB lowpass, highpass, bandpass and notch, with a second independent filter that can run in serial, parallel or stereo split.
16 steps from 1/32 to 1/4, sample-accurate and phase-locked to the host bar. Classic UPLIFT, off-beat and roller shapes are one click away.
A programmed semitone run with 0–3 octave range, five playback directions and an accent bar on every step for pumping off-beat dynamics.
The psy secret weapon: a three-band upward/downward compressor with 220 Hz / 2 kHz fourth-order crossovers and per-band trims.
Type "dark rolling acid bass" and get a playable patch instantly — and a different one every time you press generate. Offline by default, or point it at Gemini, OpenAI or your own local LLM with your own key.
Nine scale tables — Phrygian, harmonic and Hungarian minor, double harmonic and more — keep a
rolling arp in key, and LOCK applies the same quantiser to your own playing. Load a
Scala .scl file for anything from a 432 Hz reference to a 19-tone scale.
A host-synced sidechain pump ducks the output on the beat division you choose, so the synth sits under a kick with no sidechain bus, no extra mixer channel and nothing to route.
A morphing vowel bank, tape wow and flutter, filter feedback that screams, a three-band master EQ, and a QUALITY switch that renders the oscillators and filters at 2× oversampling. Every one of them is off until you ask for it.
RAND builds a new patch from the current one with musically bounded draws; UNDO / REDO step back through every preset load, randomise and knob move; A/B keeps two versions of a sound to flip between; LOCK protects the knobs you already like from all three.
A stereo output meter with peak-hold ticks beside the master knob, a trancegate with four step-edge shapes beyond the hard gate (smooth, saw, triangle), an arp with per-step gate length and a strum mode that fans held chords, the whole factory bank exposed to your DAW's program list, and an arp that can send its notes out as MIDI to record or feed another instrument.
Pricing
GoaSynth is a paid plugin: €15, once — no subscription, no tiers, no preset store. That covers the built VST3 for Windows, macOS and Linux, the complete 175-preset factory bank, every effect and sequencer in this page, and all updates for the whole 1.x line. Download it first and use it free for 24 hours — full features, no account, nothing to cancel.
€15one-time · VAT included where applicable
Personal licence for one user. Everything is in the box — there is no "pro" version waiting behind another payment.
.goalicense
file. One serial per computer, three machines per licence, activated fully offlineCard, Apple Pay and PayPal are handled by our checkout provider, who acts as merchant of record — they process the payment, issue the receipt and look after VAT, and we never see or store your card details. Prices are shown in euros; the receipt and download link arrive by email within a minute of payment.
Store checkout is still being set up, so orders are taken by email for now: download the trial build, copy your machine ID from the activation screen, and write to us with it. You'll get a proper invoice (card, bank transfer or PayPal) plus your serial and the download link — usually the same day. The licence, the 14-day refund and everything else on this page apply exactly as written.
The checkout is being wired up right now. The licence is €15 one-time, the terms below are final, and refunds run for 14 days — nothing about the offer is still in flux, only the payment page.
Checkout asks for your machine ID — the 20-character code on the plugin's activation screen, with a copy button beside it — because that is the machine your serial is signed for. Install the build first and it is already there, along with your 24-hour trial.
The source is public under the AGPLv3, so if you have a compiler and an afternoon you
can build GoaSynth for nothing — that is a deliberate choice, not a loophole. The licence
gate comes with the code, though: a fresh checkout carries a placeholder key header that
rejects every serial, so a self-build means running the keygen's --init once to
create your own keypair and rebuilding. Anyone may do that under the AGPLv3. What you're
paying for is the finished thing: tested builds for three platforms, the preset bank,
updates, and a person to email when a DAW misbehaves.
Producers making psy-trance, Goa, acid, forest and full-on — and anyone who wants 303 squelch, supersaws and a tempo-locked gate without wiring six plugins together. If your mixer already sounds the way you want, you still only need one window to get there.
Not sure it fits your setup? Ask first — a question costs nothing. A full refund is available for 14 days after purchase.
Sound engine
Each voice runs two full oscillators, a sub and white noise, with a unison stack of up to seven detuned voices around both oscillators — all band-limited so a scream stays a scream, not an alias.
Filtering
An independent second filter — its own type, cutoff and resonance — with a ROUTE selector that changes the character completely:
A three-formant bank sits after the main filters and morphs through AH → EH → EE → OH → OO on one knob — talking acid, vocal pads and phased hoovers with no third-party plugin in the chain.
Modulation
Velocity-sensitive envelopes with draggable graphs, animated LFO scopes, and a freely routable matrix for everything else.
Two ADSRs — amp and filter — both velocity-sensitive, both with graphs you can drag directly. Decay and sustain shape the classic acid "wow" while a long release carries a pad into the next bar.
Sines, triangles, squares and random sample & hold. Route to Pitch, Cutoff, PWM width, Volume, WT POS A, WT POS B or the vowel morph — seven destinations each. Run free (0.02 – 20 Hz) or lock to host tempo from 1/1 down to 1/16 and 3/16 triplets.
Eight slots with per-slot curve (LIN / EXP / SIN) and lag (slew), plus A/B routing banks — program a second set of routings and switch the whole matrix live with the BANK B switch.
8 slots, free routing. Click a cell to cycle values, right-click to go backwards, drag the bipolar amount bar — negative amounts invert the response, and a slot whose source is off is inert. Everything down to OSC A / B pan is read per voice, so each voice's LFOs, envelopes, velocity and mod wheel move only that voice; the LFO-rate and FX destinations after it are global and applied once per block, which is how one row can sweep the whole instrument's delay, phaser, reverb, OTT squeeze or sidechain pump.
Effects
Rate / depth / mix each. The chorus widens supersaws; the phaser gives a slow moving sweep behind acid lines.
Off, 1/16, 1/8 dotted, 1/8, 1/4 or free milliseconds. Feedback runs through a 5 kHz lowpass so repeats darken the way analog echoes do instead of turning brittle.
Size and damping into a straightforward mix control. Long, dark tails for morning pads; barely there for tight bass. SHIM grows an octave-up pitch-shifted copy of the tail — the shimmer that hangs over a breakdown — so a held pad keeps rising after the note has stopped.
Three more panels sit on the FX row. MOVEMENT gathers the analog drift amount, the unison detune and stereo width, and the FX duck in one place — the slow per-voice wander that stops a supersaw sounding like a photocopy. MACRO holds two performance knobs meant as modulation-matrix sources: MIDI CC 14 / CC 15 drive them out of the box, so a single controller sweep can move any routed destination. NOISE is the voice's white-noise level on its own knob, for hats, wind and riser beds without borrowing an oscillator. The SUB panel's CHAR cell reshapes the unison field itself (CLASSIC spread, PHASED centre bunching, HYPER widened edges) and CHORD makes single keys sound scale-snapped chords.
The signal is split at 220 Hz and 2 kHz with fourth-order crossovers, and each band gets the classic fast upward + downward squeeze that makes psy kickbasses and saws feel glued and loud. DEPTH blends from fully transparent to the full psy squeeze, LOW / MID / HIGH trim each band's response and OUT is an output pad.
Depth 0 is a true DSP bypass — no filter colouration when you don't want it. Every effect in the chain is a real parameter, so your DAW can automate the whole signal path.
A three-band EQ sits after MASTER and before the limiter, so it shapes the signal the limiter then catches rather than being re-shaped after the fact: a low shelf at 200 Hz, a peaking mid with its own frequency control (150 Hz – 6 kHz) and a high shelf at 4 kHz, each ±15 dB. It is the last thing you reach for on a finished patch — take off the mud, push the presence, keep the limiter honest.
Every band defaults to 0 dB, and an all-zero EQ is a true bypass: no coefficients are computed and no filtering happens, so a patch that ignores it cannot be coloured by it.
Set PUMP to 1/4, 1/8, 1/8T, 1/16 or 1/16T and the output ducks on that division, locked to the host transport: deepest right on the beat, then an exponential recovery until the next one. DEPTH sets how far it dips, so a nudge gives you movement and a full turn gives you the classic Goa pump. It sits on the voice output ahead of the FX, which is why the reverb tails breathe with it instead of fighting it — and why you never have to build a sidechain bus, add a mixer channel or hope your host has a kick track to trigger from. Off — sync at OFF or depth at zero — is a true bypass.
Sequencers
Two 16-step strips at the bottom of the window. Both are sample-accurate and phase-locked to the host bar — start playback mid-pattern and they're already on the right step.
Click or drag on the strip to toggle steps. Right-click cycles the step division, and the second cell sets chop depth. With every step on, the gate bypasses itself.
Left/right click cycles the shapes. Hand edit a single step and the cell flips back to MANUAL. The COPY cell mirrors the arp strip's active/rest pattern onto the gate in one click — program an arp run, get an identically gated trance chop.
A second 16-step strip plays the held note as a programmed semitone run. Each step is either a Rest or an offset from +0 to +11, with a 0–3 octave range — the classic rolling Goa arp line.
Drag the velocity bar up or down on any step; right-click toggles a full-velocity accent. The synth plays those dynamics back exactly, so off-beat accents pump the way they do in the genre.
Two cells beside the strip pick a SCALE and a ROOT, and every programmed step is snapped into that scale (ties resolve downward, which is the darker, more musical choice). Turn on LOCK and the same quantiser applies to notes you play live — hold a chord and it folds into Phrygian instead of the chromatic mush your keyboard hands you.
One click on the FILL cell writes three to six in-scale steps into the empty positions, leaving every step you programmed alone, so a sparse pattern becomes a psy roll without you plotting sixteen cells by hand. It only ever uses notes of the current SCALE and ROOT — including the pentatonics, where that constraint is what makes a roll sound deliberate — and it deliberately skips some rests instead of filling every gap, because a roll with air in it is the sound, not a machine-gun.
The playhead cell lights up while the transport runs, so you can see exactly where you are.
Tuning
Two things most synths leave to luck: whether a rolling arp stays in key, and what "in tune" means at all. GoaSynth answers both from the controls at the bottom-right of the window — nine scale tables, a root selector, and full Scala microtuning.
Pick a table with the SCALE cell and a pitch class with ROOT. Every semitone the arp strip plays is snapped into that scale, and an out-of-scale step lands on the nearest in-scale note — ties resolve downward, which is usually the answer the ear wanted anyway. A row of twelve LEDs beside the cell shows both the mode and what your pattern does with it: in-scale degrees glow faintly, the pitch classes your enabled arp steps actually hit light up, and the root is the brightest — so you can read the shape of the scale and the shape of the line at a glance.
LOCK lifts the quantiser off the arp and puts it on your playing: hold a chord and every note folds into the selected scale. With LOCK on and Hungarian minor chosen, a wrong key never lands — it simply becomes the note of the scale that sits closest to it.
.sclFINE¢ shifts the whole instrument by up to ±100 cents, so −32 puts you on a
432 Hz reference and everything else in the session follows. The SCL button goes
further and loads a Scala .scl file: the classic text format, 2 to 64
degrees per octave, octave-wrapped and anchored on A4.
204.0), ratios
(6/5) and decimal ratios (1.25), with comments and blank lines
ignored%APPDATA%/GoaSynth/tuning.scl and reloaded next
session, so the tuning survives even if you move or delete the originalOctave wrapping means a seven-degree file still plays every key on the keyboard: notes above its range continue the pattern instead of falling back to 12-TET.
Why this genre needs it: Goa and psy trance are built on hypnotic repetition, so one wrong step is audible by the fourth bar. Scale locks keep a wild arp in key without flattening it, and microtuning is how a lead sits against a tabla, a flute or a 432 Hz drone instead of beating against it.
AI patch designer
The AI PATCH screen is a vocabulary-driven designer. Families stack — "dark rolling acid bass" is the acid family plus dark and bass tweaks — then a variation pass guarantees that no two generations are identical while staying musically related.
The same prompt always yields a different but musically-related patch: waveform flavours, octave placement, unison and detune rolls, filter offset, pan spread, delay division, fresh gate and arp grooves, and humanised envelope jitter. Variant suffixes (II, NEO, PRIME…) in the title make generations easy to tell apart in the browser. Save the ones you like.
The AI ENGINE button switches the designer between four engines. LOCAL is the default and needs nothing but the plugin; the other three are opt-in, and use your own key or your own server:
http://localhost:11434/v1, OpenRouter, or anything else speaking the same API.
A local server needs no key at all.Your key is stored per user in %APPDATA%/GoaSynth/ai.txt on your own disk, and it —
together with your prompt — goes only to the provider you selected, never to us. What
leaves your machine is the brief plus a compact table of parameter names; your presets,
projects and audio never do. Replies are parsed defensively before anything reaches the synth:
unknown parameters are dropped, numbers clamped and bogus choice names rejected.
A model occasionally answers with a parameter that doesn't exist or a value outside its range. Instead of handing you a half-broken patch, the plugin shows the model its own rejected reply and exactly what was wrong with it, and asks once more — so a formality slip costs a second rather than a generation. If the second reply fails validation too, nothing is applied and you are told why.
Generated patches are not limited to the classics: the designer can reach the vowel morph, the scale quantiser, the fine tuning, the pump and the quality switch, so "talking acid in Phrygian" is a brief it can actually answer rather than a stretch.
Every cloud patch you keep is archived on disk — the brief, the model's title and the values
it produced — in %APPDATA%/GoaSynth/Learned. Later LOCAL generations are
blended with the best-matching entries, so the offline designer gradually picks up the stamp
of the models you actually liked, with no key and no network. Nothing in that archive is ever
transmitted, and deleting the folder resets the memory.
Factory presets
Every preset carries its category as a tag of the same name, so the browser's TAG filter doubles as a family menu — pick ACID or PAD and see only that bank. Names are prefixed by category, which makes the search box a category filter too.
303-family squelch
Rollers, subs, growls
Bells, metallics, vocal forms
Sweeps, noise, zaps
Supersaws, hoovers, screeches
Swirls, drones, choirs
Trance fingers, kotos, glass
Builds, sweeps, noise jets
Organs, EPs, strings, clavs
The header always shows the current patch name with < / > arrows for stepping through the bank, BROWSE opens a Serum-style overlay, and SAVE / DEL write or remove a user patch from the header itself:
SAVE writes the complete patch — every parameter plus both drawn waves — as a
.goapreset file in %APPDATA%/GoaSynth/Presets. The save dialog takes
space-separated tags ("acid bass night") and a SHARED toggle: shared patches land in
C:\Users\Public\Documents\GoaSynth and are visible to every account on the machine
(a same-named preset in your own bank shadows the shared copy). AI-generated patches are one
SAVE click away from being permanent.
EXPORT PACK and IMPORT PACK move whole banks in and out of the plugin. A pack is a
.goapack file — a plain ZIP containing .goapreset files — so it's trivial to
email, torrent or archive.
__MACOSX folders) are ignored, and zip paths are flattened on
import so nested or hostile entries can't write outside the presets folder.%APPDATA%/GoaSynth/PresetsC:\Users\Public\Documents\GoaSynth.goapreset — all parameters + both user waves.goapack — ZIP of presets, safe to shareSkins
The THEME button cycles six complete skins and names the one you're on
(UV → STEEL → WARM → NEON → PAPER → OLED),
stored with the session and restored on reopen. Click one below to repaint this page.
Behind the panels an animated psychedelic swirl counter-rotates at about 30 fps — two pre-rendered log-spiral layers in the UV palette — and scale-pulses subtly with the smoothed output level, so the window moves with the music instead of sitting static.
Specifications
Frbf / Gsyn.scl files (2–64 degrees per octave, cents or ratios), plus ±100 cents fine tune (−32 = 432 Hz)%APPDATA%/GoaSynth/License/license.txt, with the shared ledger and trial stamp under C:\Users\Public\Documents\GoaSynth\LicenseInstall
The download link is not live yet. The store that hosts the build is still being wired up, so there is nothing to grab on this page today: when it is ready the build comes with your purchase email, and the receipt carries the download page. The complete source is already public under the AGPLv3 if you would rather build it now — the steps at the bottom of this section show how.
GoaSynth-Setup-<version>.exe installer, then choose where the plugin goes:
Standard VST3 folder → C:\Program Files\Common Files\VST3\
(every DAW; Windows asks once for admin) — or pick a custom folder your DAW scans, no admin needed.
GoaSynth.exe the installer put next to the plugin.GoaSynth.vst3 to:
/Library/Audio/Plug-Ins/VST3/
GoaSynth.vst3 to the per-user bundle folder:
~/.vst3/
.goalicense file.The complete source is public under the AGPLv3, so anyone can compile GoaSynth without paying. Requires CMake 3.22+ and MSVC 2022 (Windows), Xcode (macOS) or a g++/clang toolchain (Linux). JUCE is fetched automatically by CMake.
cmake -B build -G "Visual Studio 17 2022" -A x64 -DCMAKE_POLICY_VERSION_MINIMUM=3.5
cmake --build build --config Release --target GoaSynth_VST3 --parallelThe plugin lands at
build/GoaSynth_artefacts/Release/VST3/GoaSynth.vst3. On macOS/Linux use your
platform's generator instead of the Visual Studio one. A RoundTripTest target checks that
every parameter and both drawn waves serialise and reload identically. The licence gate ships with
that source: Source/LicenseKeys.h is generated by GoaSynthKeygen --init,
so a fresh checkout carries a placeholder header that rejects every serial — building it yourself
means creating your own keypair once and rebuilding. The AGPLv3 allows exactly that; the
€15 buys the finished builds, the support and the updates.
Activation is offline, and it binds to one computer at a time. A serial is an RSA signature over your machine ID, so it never phones home — but it also can't be passed around, and a Windows reinstall or a hardware change moves the ID. Email us and we release the old binding and issue a fresh serial, free; you are never locked out of hardware you own.
Contributing
The editor keeps its hover info and modulation indicators uniform on purpose. If you touch Source/PluginEditor, these are the rules new controls follow.
Every interactive control has hover text, displayed by the single
TooltipWindow the editor owns — without it every setTooltip()
is a silent no-op. Knobs and toggles build theirs automatically: parameter name +
live value in engine units (Cutoff (Hz) — 1500 Hz, Attack — 0.01 s,
RESO — 25 %; toggles show ON/OFF). The unit map is liveValueText()
in Source/PluginEditor.cpp; give any new parameter a branch there, or the
OverlayTest unit sweep fails and names the id. Text is rebuilt every paint, so values
track drags, host automation and preset loads while you hover — never cache tooltip
strings. Hand-written tooltips follow the house style: what it is, an em dash,
then the gestures.
A knob targeted by an active mod-matrix slot wears small dots in its top-right corner —
one per source slot (max 3): teal for LFO 1,
magenta for LFO 2, accent for envelopes, dim for
velocity/modwheel. Each dot pulses with the live source value × amount, and depth past
±0.6 adds a ring. Hovering the knob lists its routings
(MOD 2: LFO 1 → CUTOFF (+40)). Dots refresh on matrix edits, overlay open and
preset loads — any new code path that changes slots must call
goaui::repaintCtlPaints().
The matrix itself routes by pointing: click a DST cell then a knob, or a SRC cell then
an LFO/ENV graph; ESC or a re-click cancels, and the just-routed cell flashes inside
the card with a brief arrow pointing at the clicked control to confirm. New routable
controls must expose their parameter ids
(Ctl::paramId, LfoGraph::rateParamId,
EnvGraph::attackParamId()).
Try it
A tiny slice of the plugin running in your browser: four of the gate shapes the sequencer ships with, clicking steps just like the real strip. No audio files, no samples — every note is synthesised live in your browser the way the synth does it.
The top four rows are the gate shapes (UPLIFT, OFF-BEAT, ROLLER, 16THS) — click any cell to toggle it. The bottom row drives the arp sequence through the scale quantizer. Headphones recommended; the real plugin adds the supersaw, the filter and the rest of the FX chain.
A preset from the shipped bank, refreshed by hand with each release. Load it from the PRESETS browser.
All 175 patches ship inside the plugin — browse, randomise from them, or overwrite with your own.
Licence
Two things are true at once: the binaries cost €15, and the code is open. That's intentional — and no part of the licence locks your music or your copy of the plugin.
Paying for GoaSynth buys a personal licence to the built plugin: use it in commercial releases, live sets, remixes, sample packs and client work, forever. There are no per-track fees, no royalties, and nothing in the licence claims any rights over the music you make with it.
The code is released under the GNU Affero General Public License v3.0. Anyone may read it, modify it, and compile a working plugin for free — including people who bought a licence. The AGPL also lets you redistribute it, as long as the corresponding source goes with it.
So the €15 is not a padlock on the software; it's the price of not building it yourself. You're paying for compiled, tested builds for three platforms, the 175-preset bank, updates and support — and in exchange you get a plugin you can inspect, audit and keep, with no subscription that can expire on you.
VST® is a trademark of Steinberg Media Technologies GmbH, registered in Europe and other countries. The Licence Agreement and the Terms of Sale are provided with your order confirmation, and are on this site in full before you buy.
FAQ
Because you'd rather make music than compile code. GoaSynth's source is public under the AGPLv3, so yes: you can clone it, install CMake and build the plugin yourself for nothing, and that's a deliberate choice rather than a loophole. The €15 buys the finished product — builds for Windows, macOS and Linux, the tested 175-preset bank, every update in the 1.x line, and someone to email when a DAW misbehaves. Most people take the second option; both are legitimate.
The download page for the Windows, macOS and Linux VST3 builds, the licence terms, and a
licence serial signed for the machine ID you gave at checkout — delivered as a
.goalicense file you double-click or IMPORT. There's no account to create and no
server to reach: activation is offline and permanent. Keep the receipt email, since it stays
your re-download link and your order reference for support.
Yes — install the build and GoaSynth runs fully featured for 24 hours from first
launch: the whole sound engine, both filters, the FX chain, the trancegate, the arp, the AI
designer and all 175 presets. The header shows a TRIAL 23 h 59 m badge, and
clicking it opens the activation screen with your machine ID ready to copy. Once the 24 hours
are up, instances render silence until a serial is entered.
Three machines that you personally use — studio desktop, laptop, spare. Each needs its own serial, because a serial is signed against that computer's machine ID: checkout asks for one ID, and send us the other two afterwards and we'll issue those serials free. One licence covers one person, so bandmates and studio partners each need their own. Nothing is ever checked online — the binding lives in a ledger file on your machine, not on a server.
Email within 14 days of purchase and you get a full refund, no questions asked — you don't have to justify it or prove anything, and having already used the plugin doesn't disqualify you. We'd rather have a clean refund than a grudging customer. The details are in the Refund Policy.
No. The default LOCAL engine is a rule-based generator that runs entirely inside the plugin —
type, generate, save, offline. If you want a real language model, the AI ENGINE button
can point the designer at Gemini, an OpenAI-compatible endpoint or your own base URL (Ollama,
LM Studio, OpenRouter) using a key you supply. That key is kept locally in
%APPDATA%/GoaSynth/ai.txt and sent only to the provider you chose; your presets,
projects and audio are never part of the request, and switching back to LOCAL makes the plugin
fully offline again.
It's a standard VST3 instrument for Windows, macOS and Linux, built with JUCE 8. Because the oscillators and wavetables are band-limited and the OTT is a true bypass at depth 0, the engine stays light even with unison and long reverb tails — but a 7-voice unison on both oscillators, 16 voices of polyphony, full OTT and QUALITY (2× oversampling) on is the heaviest case.
Your bank is in %APPDATA%/GoaSynth/Presets. Use EXPORT PACK to write a
.goapack ZIP of your whole bank and send it to anyone; they hit IMPORT PACK and it
merges in without overwriting their own patches. There's also a machine-wide shared bank at
C:\Users\Public\Documents\GoaSynth if you share one studio PC.
From the plugin: nothing. It keeps a handful of small files on your own disk — your preset bank and settings, the serial you activated with, a trial timestamp, your AI key if you add one, a copy of any Scala tuning you load, and a local memory of the AI briefs and patches you chose to keep — and sends nothing anywhere unless you switch on a cloud AI engine. Because a licence is signed for a machine, the store's checkout asks for your machine ID alongside the usual name, email and billing country; the Privacy Policy explains exactly what that ID is, where it goes and how long it is kept. This website sets no cookies and runs no analytics.
The machine ID is a fingerprint of your hardware and user account, so a reinstall or a new machine produces a new one — and the old serial correctly refuses to activate there. That is the same property that stops keys from being passed around. Email us with your order reference and we release the old binding in the ledger and issue a fresh serial for the new ID at no charge; there is no limit on how often you need that.
Yes, and that's included in the €15. Releases, live sets, remixes, sample packs and client work made with GoaSynth are entirely yours — no royalties, no credit required, no per-track fee. The licence covers the software, never your music.
Yes — both the gate and the arp are sample-accurate and phase-locked to the host transport bar. Drop into the middle of a bar and they're already on the correct step instead of restarting.
Yes. SCALE and ROOT quantise the arp — and your live playing, with LOCK on —
into nine built-in tables, from Phrygian and harmonic minor to minor pentatonic. For anything
past that, SCL loads a Scala .scl file: just intonation, 19- or 31-tone
equal temperaments, gamelan-style per-octave tables, up to 64 degrees. FINE¢ covers the
common cases on its own, since −32 cents is a 432 Hz reference. The loaded tuning is copied
into your settings and comes back automatically next session.
No. The built-in PUMP ducks the output on a beat division you pick — 1/4, 1/8, 1/8T, 1/16 or 1/16T — locked to the host transport, with DEPTH setting how deep it goes. Nothing to route, no kick track to trigger from, no extra mixer channel, and it works in any host that reports tempo. Sync at OFF or depth at zero is a true bypass.
The plugin is a VST3. Steinberg's usage guidelines say the word VST shouldn't appear in a product name, so the name stays clean and the format is described separately — with the trademark attribution above.
One payment of €15. Three platforms, 175 presets, every update in the 1.x line, and no subscription to forget about.
24-hour trial · 14-day refund · offline activation · no account · source published under the AGPLv3