🎉 It’s launch weeeeeek! Sine Machine is out of early access. Grab it →

Sine Machine

is an additive synthesizer

sine machine is an instrument that you play on your computer.

it looks like this:

It runs on macOS, Windows and Linux.
It’s a VST3, AU and CLAP instrument.
You can also run it as a Standalone app.

sine machine has over 10,000 time domain oscillators

(and over 20k lfos)

it’s a friendly synth

(especially for an additive!)

it has features

20 voices of 511 time-domain oscillators
bulk-editing of per-harmonic ADSR, volume and pitch LFO
additive “reverb” made out of 1000 sine waves
additive “filters” including brickwall and gaussian band-pass
per-harmonic gaussian pitch noise (yum)
hackable plaintext presets (json format)
140+ factory presets
0 knobs (don’t ask)

and lots of visualizers

(they help you understand wtf is going on)

Walkthroughs

Read Additive Synthesis Comic #1 — “What’s a harmonic?”

Read Additive Synthesis Comic #2 — It’s Timbre Time!

sine machine by @sudara is the best synth I have ever used

@imKelbin

got this a bit ago, just booted it up like 15 mins ago and this might be the coolest synth ive ever messed with what the fuck

@anem0s1

its blowing my mind already <3 about to hear this in all of my projects LOL <3

galen tipton aka recovery girl

loaded up the demo and two hours flew by, good going !

Diskette

Buy Sine Machine

Launch Party! Sine Machine is (finally) out!

What’s included

MacOS AU, VST3, CLAP, Standalone (Apple Silicon and Intel)
Windows VST3, CLAP, Standalone (Windows 10 and later)
Linux VST3, CLAP, Standalone
Up to 3 installs per license (online activation required)
Major version updates included

Pay what you want!

$75 USD

Buy Now

Pick a price that feels right to you.
All taxes are included.

Note that I don’t do sales
or bLaCk fRiDaY dEaLZ!!

Frequently asked questions

Have a different question? Hit me up at sudara@melatonin.dev

What are the minimum requirements?: Windows: Windows 10 and later
macOS: Intel (macOS 11 and later) or Apple Silicon.
Linux: 64-bit distribution.
What formats does Sine Machine come in?: VST3, AU and CLAP on macOS.
VST3 and CLAP on Windows and Linux.
Standalone on all three.
Is there a trial?: Yup! There’s a 14-day trial with no limits.
Download Sine Machine here
Do you support AAX?: Not at this time. I recommend using Modalics’ amazing (and free!) PluginBuddy wrapper for people on Protools. If you want native AAX, do let me know.
Is Sine Machine CPU hungry?: It’s pretty chill! I improved performance a ton during early access. Older intel machines (2016-2019 era) playing bass notes with high unison voices might see it get a bit greedy.
What are some geeky things to do with Sine Machine?: Hack the partial ratios right in the presets, pair it with MTS-ESP for microtonal scales, control it with MPE for per-voice pitch glide, then flip on absolute pitch glide so every harmonic emerges from a single frequency.
Do you offer offline activation?: Yes! As of May 2026, version 27.1.96 and later.
What took you so long to release Sine Machine?: I’m slow, thorough and got distracted by many shiny things. And making software that feels nice to use is really hard, even in 2026!

added the ability to map partials to arbitrary frequencies. instead of 500 harmonics, this is 500 sine waves tuned to the same pitch, spread apart a bit, going through various per-harmonic pitch and volume modulation pic.twitter.com/VJSuWnj6bx
— sudara (@sudara) August 20, 2025

last feature before private beta…
— sudara (@sudara) February 24, 2025

ok here we go, bending harmonics from a normal sawtooth to the set of fundamental frequencies contained in a 12tet minor 6/9 chord pic.twitter.com/D213OyE9Vi
— sudara (@sudara) February 27, 2023

sine machine was built (and re-built) by Sudara over a period of 6 years

(i’m a musician and indie dev who also does some open source)