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Sinnah Sinnah
Sinnah by NUSofting is a Virtual Instrument Audio Plugin for macOS and Windows. It functions as a VST Plugin and an Audio Units Plugin.
Windows 64-bit VST host
macOS Mojave or later, AU or VST host.
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Sinnah is a freeware VA synth plugin (*and a project) but instead of the standard subtractive resonant filter it uses a resonant delay network.


  • Sinnah is a synth based on a single complex oscillator that includes five waveshapes with increasing spectral complexity, harmonics level for all waveshapes, noise level, and a delay matrix.
  • The delay matrix can have various configurations, from a "triple chorus" per voice to highly randomized resonators, or tuned relatively to the note played.
  • The delay matrix can also do multiple slapback echoes.
  • The feedback control of the matrix can go from zero to extremely saturated and it's modulated by its own envelope.
  • The output of each voice is stereo via the delay matrix, which features a stereo spread knob.
  • The main analogue modelled ADSR envelope is loopable: two, three or continuous repeats.
  • The envelope can modulate the waveshape selection and the harmonics level.
  • The synth also features a subtractive stereo filter to carve the spectrum of the sound, somehow like an equalizer, with three filters: high pass, low pass and band reject (notch). The band reject filter also features gain and bandwidth controls.
  • A useful simple reverb is included.
  • The oscillator is antialiased and can play eight voices or mono, and features octave and fine pitch controls.
  • The GUI is fully drawn by vectors and resizeable, featuring an oscilloscope and peak meters. And eight colour schemes are available to fit your mood and taste.
  • An extended ToolTip display provides information for each control at mouseover. So you don't need to read a lengthy manual to learn what a knob or a slider is for.
  • The preset system is cross-platform, the files use the YAML format so they are very easy to read and edit if needed. Moreover, the preset names can support the complete international character set.

What's new Sinnah 1.2.1?

- ODDSOUND MTS-ESP* supported microtuning to load 'scala' and .tun

- Compatibility update for macOS Big Sur and Windows 10 latest.

- Reached 225 factory presets.

- GUI adjustments.

[* You may download a free master MTS-ESP plug-in at https://oddsound.com/mtsespmini.php]

What's new in Sinnah 1.1? LFO and more.

- New feature: GUI has been improved, especially for Mac compatibility.
- New feature: Noise and Harmonics controls can be linked, and act like a single parameter.
- New feature: LFO with several selectable targets, 9 waveshapes and delay (fade in).
- New feature: MIDI controls: ModWheel and Aftertouch with several selectable targets.
- New feature: Sustain pedal sensitivity.
- New feature: Pitchbend range adjustable up to 48 semitones, -24 to +24.
- New feature: Keytracking assignable to Harmonics and ADSR envelope level.
- New feature: Reduced CPU load, DSP optimization.
- New feature: "Inits" category with various initialize presets.
- New feature: More detailed HTML manual.
- New feature: Unlimited custom colour schemes using theme files.
- New feature: 152 presets now included.
- Fixed the click that happened playing in Mono legato over a previously released note.
- Fixed ADSR repeat 2 and 3 that weren't working.
- Fixed incorrect behavior of the box slider GUI controls.

Latest User Reviews

Average user rating of 4.00 from 1 review

Reviewed By wakax [all]
April 20th, 2016
Version reviewed: 10.10.5 on Mac

My favourite free (in beta/developement stages) synth in the landscape lately. And one of the best ideas in synthesis that was publically shared and wellimplemented. What I like most about Sinnah (and there are oh so few synths like this nowadays) is that, with very few controlls I can reach a very wide range of sounds! This is for me, one of the "must haves" in a good creative tool. Its sound could be defined as "organic digital", sort of physmod variant. (very very phat yet very digital). Good for everything: from wide orchestral like pads to short plinks and plonks, from fake oboes and roaring distorted leads to broken piano simulations. Clean fresh rescalable interface and sharp look. Very low CPU usage. Lots of good presets to start with. This little synth is already a beast and I'm really waiting for its offsprings and new generations of developement.

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Comments & Discussion for NUSofting Sinnah

Discussion: Active
15 August 2016 at 12:39am

Hi. I'm new to this site and I just love it! I'm actually relatively new to the world of soft synths and just stumbled across freeware while looking for other answers to my questions. It's amazing what is offered for free! I signed up so I could take advantage of all the banks and patches here. I've gotten rather addicted to all this. This synth isn't tagged as 64-bit for Windows, but I downloaded it about a month ago in my 64-bit system (Windows 7). Just a heads up. Thanks for offering this website for music addicts like myself. I've been a guitar player for over 35 years, and this give me a whole new world to explore.

16 November 2018 at 4:02pm

Thanks for this !!.

A good little synth.

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