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Synth (Additive) Plugin by CO2Sound
Heliox by CO2Sound is a Virtual Instrument Audio Plugin for Windows. It functions as a VST Plugin.
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8 KVR members have added Heliox to 2 My KVR groups 8 times.
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KVR Rank

Overall: 9229   8362

30-Day: 9110; 7-Day: 8908; Yesterday: 6032

Heliox is a rather simple experimental synthesizer, with a "no-frills" GUI, capable of "weird" textures and noises, as well as "normal" synth sounds, like pads, leads and basses.

Main features are:

  • monophonic, with 30 oscillators bank.
  • adjustable oscillators' frequencies, ranging from single frequency to harmonic and non-harmonic series.
  • oscillators can be purely sinusoidal, or "shaped" by an adjustable parameter.
  • adjustable attenuation factor between successive oscillators.
  • 30 LFOs, each modulating amplitude of corresponding oscillator.
  • adjustable LFOs' frequencies, similarly to oscillators.
  • LFOs can be purely sinusoidal ("bell-like") or "shaped" by 2 adjustable parameters: center and sharpness.
  • phase shift between successive LFOs is adjustable.
  • LFOs can be periodic or randomly intermittent, with adjustable "density".
  • ADSR envelope.

Latest User Reviews

Average user rating of 4.00 from 1 review

Reviewed By xoxos
August 2, 2014

i see there's a new version of heliox.. this "review" (acknowledgement and endorsement) concerns the initial release.

makes my top handful of synths list.. not general purpose but utterly unique and extremely applicable for select timbres. the shifting harmonics make heliox an excellent source for signal chains producing complex ambiences, even emulative environments can be created if one is selective in processing.

the original release was pragmatic and appropriate for my applications. people who prefer self contained instruments with on-board effects may balk at the utilitarian form.

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Comments & Discussion for CO2Sound Heliox

Discussion: Active


6 October 2018 at 3:50pm

Um, sorry but the download like is some BS spam, not even in English. Fix it or take it down... Click on the Helios as a product, not the download link for windows. Very disappointed in KVR.

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