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Synthesizer Plugin by zOne.sk
Eclipsis Eclipsis Eclipsis Eclipsis Eclipsis
Eclipsis by zOne.sk is a Virtual Instrument Audio Plugin for Windows. It functions as a VST Plugin.
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30-Day: 565; 7-Day: 451; Yesterday: 634

Eclipsis is hybrid wavetable synthesizer with three oscillators each with his own frequency and subtractive modulation. Additional modulation possible with 6 LFO assignable trough modulation matrix with 9 sources and 39 modulation targets. Arp/Gate (Dynamics) module with abillity to assign routing to 7 targets. Two effects racks, each containing Reverb, Chorus and Delay effect. Unique preset randomization, subpreset saving/loading for easy preset creation and more.

Use right mouse click to set default parameters on all controls and double right click to set it to zero.


  • Preset manager.
  • Complex preset randomization.
  • Subpreset saving/loading for easy preset creation/modyfication.
  • Main aplitude control.
  • Polyphony / voice selector (up to 32 voices).
  • Portamento (glide).
  • 3 independent oscillators each with route output, detune, phase offset, scope, ADSR, smoothing control (1 pole LP filter), pan and amplitude control.
  • 118 Waveshapes and 3 additional tools to adjust base Waveshape (increase total number of final shapes to 1888).
  • FM modulation with selectable input signal source (Frequency, Pitch, Velocity), detune, waveshaper, scope, smoothing (1 pole LP filter) and amplitude control.
  • Subtractive modulation with 17 Filter types, cutoff modulation with selectable input signal source (Frequency, Pitch, Velocity), detune, waveshaper, ADSR, scope, smoothing (1 pole LP filter) and amplitude control.
  • Mod matrix with amplitude controls, 9 input sources and 39 mod targets.
  • 6 LFOs.
  • 2 Effect rack each with Reverb, Chorus/Flanger and Delay (syncable to host) effect.
  • Arp/Gate module with 8 selectable targets, adjustable number of Steps (4-32), frequency control and divider (example: divide one 32 step pattern to 2 patterns with 16 steps), playback control (Forward, Forward and hold, Backward, Backward and hold, Ping Pong /Forward-Backward/).
  • Arp module section for semitones (+/-1 octave range) and for octaves (+/- 5 octaves range, pattern randomization, shift, load and save.
  • Gate module with smoothing controls, randomization.

MIDI CC and MIDI learn will be implemented in next version.

Windows only (32-bit), VST 2.4.

Installation: extract to your VST folder with all subfolders inside. Thoose subfolders contians subpresets and they should be in same folder as eclipsis.dll. Eclipsis will then automaticly open corresponding folder for selected section.

Quick preview of Eclipsis:
{See video at top of page}


Arp/Gate module:

Demo music made with Eclipsis:

Track made only using Eclipsis (12 instances of Eclipsis)

2nd official presets bank:

Made with FlowStone

Latest User Reviews

Average user rating of 5.00 from 2 reviews

Reviewed By martiu [all]
February 3rd, 2022
Version reviewed: 1.0 on Windows

One of the best free synths out there, extremely powerful and easy to work with.

Hidden gem.

Read Review

Reviewed By dheerajvirgo [all]
April 29th, 2015
Version reviewed: 32 on Windows

The interface looks so different which is kind of attractive, and its really interesting to tweak and create the sounds.. one of best soft synths I have used.

Read Review

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Comments & Discussion for zOne.sk Eclipsis

Discussion: Active
4 October 2015 at 10:48pm

I like this synth ! the randomization and modulation options can make some really nice textures and sounds.

18 November 2015 at 2:23am

of course, awesome tool maybe a bit unclear gui but...cool, very cool.

4 April 2016 at 6:51pm

This is literally the only synth I use right now.

Anyone else still here?

23 May 2017 at 6:34pm

Incredible synth, just stumbled on it due to some random blog. It connected with me instantly. The interface is incredible. Something about how you work with it is seamless. Already pushed it to the top my use list.

26 October 2017 at 4:49pm

The best Arpeggio module I have ever seen. I groked it immediately, powerful, musical, and makes some great sounds.

Not So Much for the synth module, althought the presets are pretty impressive sounding. The GUI for the synth section is not obvious to me how to work it.


17 December 2017 at 8:38pm

fantastic synth for ambiance, fx, acoustic, just 32-bits, search for X64.

28 January 2018 at 11:00pm

Made with Flowstone so only 32-bit.

10 August 2022 at 11:12am

It's one of the many plugins, that should be released open-source.
With the hope that community will adopt it or rewrite it without any platforms like Flowstone.

22 December 2022 at 10:45pm

Realy want to see an update for Eclipsis, its such a good sound toy, very flexible:
what i want to see:

- size-able
- another GUI or Colors
- all random
- 64-bit / VST3/ Clap
- arp visual feedback (running lights).

26 November 2023 at 4:24pm

Please help. I tried extract folder to every 32-bit VST folders and still nothing, Ableton didn't see it :(Where I have to extract? Thanks...

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