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Synth (Hybrid) Plugin by Image Line
Sytrus by Image Line is a Virtual Instrument Audio Plugin for Windows. It functions as a VST Plugin.
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Overall: 130   130

30-Day: 160; 7-Day: 163; Yesterday: 233

Sytrus is a powerful and versatile synthesizer featuring 6 customizable operators for FM and RM synthesis, plucked strings synthesis, 3 SVF (filter) & distortion modules, effects module with chorus effects and 3 delay lines & unique programmable unison mode.

The rich implementation characteristics of Sytrus allow for an extremely wide range of sounds, including bass lines, bells, pads, drums, pianos, strings, organs and even entire drum and synth loops (in a single patch/note), made possible by the completely customizable envelopes supported by each module.


  • 6 FM Operators.
  • FM / RM Matrix.
  • Up to 64x Oversampling.
  • EQ.
  • 3 filter units, 12x5 filter types, 3 waveshapers.
  • Powerful multipoint envelope / LFO editing with arpeggiating.
  • XY Controller.
  • Built-in equalizer and effects (chorus / flanger, 3 delay units, 1 reverb unit).

Latest User Reviews

Average user rating of 4.31 from 13 reviews

Reviewed By viraven8 [all]
May 2nd, 2023
Version reviewed: fl 21 on Windows


This is a super old plugin that has definitely stood the test of time. This plugin has a high skill ceiling due to it's many features and poor outdated UI, but sounds crystal clear and is still very useful for producing just about anything a producer of today would want. I still use Sytrus alongside with newer VSTs such as Serum/Pigments, and will continue doing so as this synth is unique in the way it produces sounds. I really hope we get a Sytrus 2 one day that fixes all the outdated problems Sytrus currently has.

This synth has a fixed modulation setup that cannot be altered, and can be viewed by one of the icons in the top right corner. First a waveshape is generated additively through an Oscillator's wave editor. You can choose between analog sine/tri/square waves, and then edit those waves by shaping them with the tools provided. The real unique and amazing part of Sytrus is that you can then add non-Sine harmonics based on the waveshape you created. You can even wave-edit a 4 harmonic oscillator and then "convert to sine-harmonics" to further edit the spectrum, however this process becomes laggy with more than 4 harmonics (imagine if Sytrus 2 allowed for endless harmonic edits). No other additive synth I've seen can do this while ALSO being able to FM/RM between the 6 oscillators. After FM/RM, you can further edit the sound through 3 subtractive filter oscillators which are each equiped with a powerful editable Waveshaper. Unfortunately the modulation ends with filters and FX, so you cannot FM a filtered wave (FM8 and most other FM synths can do this). The FX are limited to a metallic reverb, a decent 3 layer delay, and a decent chorus. I personally don't care for VST fx as I usually use other fx anyways, but others might find this limitation a problem for sound design.

Sytrus really needs an update, after 10 more years this plugin probably should deserve 4 stars instead of 5. For now it certainly deserves 5 stars.

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Reviewed By CyberJunkie [all]
June 1st, 2019
Version reviewed: latest on Windows

Great VST, great price.

Has a bit of everything and controls to modify/manipulate to the users desire in order to create an abundance of musical yumminess :).

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Reviewed By levendis [all]
October 22nd, 2017
Version reviewed: current on Windows

i love this synthesizer so much that i automatically reach for it first.
Light on system resources, great modulation system, rich FX section, intuitive overall design, adaptable oscillators (operators)... by far my most treasured synthesizer plugin.

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Reviewed By ZacoOne [all]
July 23rd, 2017
Version reviewed: 2.6.73 on Windows

My workhorse. Period. One of the best if not most underrated FM synths out. There's so much potential if you spend a little time to get to know it. Ask Seamless.

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Reviewed By johnny.w [all]
May 4th, 2017
Version reviewed: 1.6 on Windows

The sounds of Sytrus are a 10, the variety ditto. Tho many have complained about the small-size GUI my Sytrus issue is that the product does not have a browser. Any synth without a good browser--like Tone2'a Rayblaster or Electra 2--is not something I can work with. Clicking on "Presets" and having a large "spreadsheet" (in small font) splattered on the screen is NOT GOOD. After selecting a preset the screen retracts. I need a browser that stays put so I can audition presets properly, without working backwards. People praise Image-Line products, but IMO the company policy evinces a sort of arrogance, unresponsiveness or indifference to their captive market, and a disregard for user or would-be user criticism.

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Comments & Discussion for Image Line Sytrus

Discussion: Active
2 March 2016 at 7:28pm

Sytrus is gentle (in FLS) with CPU because IL's Fruity Loop Studio cares a much more about FL native plugins.

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