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Deimos
Deimos Deimos Deimos
Deimos by Tom Trnk is a Virtual Instrument Audio Plugin for macOS, Windows and Linux. It functions as an Audio Units Plugin, a VST 3 Plugin and a CLAP Plugin.
Product
Version
0.12.0
Product
Version
0.12.0
Product
Version
0.12.0
Instrument
Formats
Copy Protection
None

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KVR Rank

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30-Day: 5155; 7-Day: 7084; Yesterday: 2412

Deimos is a free synthesizer plugin focusing on high quality sound and ease of use.

Feature Summary:

  • 2 oscillators with various waveforms and waveform manipulation modes.
  • Oscillator frequency/phase/shape modulation and hard sync.
  • Mixer with noise source and ring modulation option.
  • Filter with several modes and 2 character options, additional feedback paths or dual peak split.
  • 2 envelopes with curvature control.
  • 1 LFO with various waveforms and modes.
  • 1 additional modulation processor slot: envelope, LFO, sequence, math, ...
  • 9 modulation slots.
  • Chorus effect.
  • Fixed internal sample rate so your presets sound the same everywhere.
  • Oscilloscope and spectrum analyzer.
  • Support for polyphonic expression.

Note: this product is considered beta, meaning it may still contain bugs or not work properly on your system.

If you come across any bugs or other technical issues, please post a topic on the itch.io page or join the discussion on KVR.

Latest User Reviews

Average user rating of 4.00 from 1 review
Deimos

Reviewed By NWSM [all]
April 19th, 2026
Version reviewed: 0.8.0 on Linux

𝐷̵𝐸̵𝐼̵𝑀̵𝑂̵𝑆̵

I find myself using it more and more—it's just that inspiring. I really enjoy the depth and complexity of the sounds and modulations you can create with it. It's a beautiful, free, and pleasantly aggressive synth that handles everything from clean tones to heavily distorted textures with ease.

Triple modulation on frequency? Absolutely—no problem. Why not LFO, Drift and Random?

FM, PM, SM—it's all right there. The AUX and phase sections are wonderfully unconventional, full of creative and slightly chaotic options that invite experimentation.

Add/Mod, Delta, Sequence, Drift, Lag, S&H, bipolar LFO with phase modulation—yes, all included and super flexible.

It runs very well on Linux, which is a big plus.

Suggestions for future updates:

  • A second LFO and AUX would expand modulation.
  • A fresh GUI design could be nice—maybe flat colors with some neon accents for modulator red accents.
  • Minor space optimizations (pulldown buttons, too small controls, font-to-knob spacing too narrow).
  • A few more filter effects would be welcome.
  • Even deeper SUB-style optimisations in the AUX section, feels kinda lost in options in a small place.
  • more than 9 Modulations at ones maybe.

Overall, no questions—just grab it and start playing. Definitely a recommended synth.

𝕋𝕙𝕒𝕟𝕜 𝕪𝕠𝕦, 𝕋𝕠𝕞.

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