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 Oresus by HyperSynth is a Virtual Instrument Audio Plugin. It functions as a VST Plugin.
Product Oresus
Developer HyperSynth
Price (MSRP)
Type / Tags Synth (Analogue / Subtractive)
Plug-in, App & Soundware Format(s)
Operating System Availability
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Oresus is a synthesizer with huge range of tonal possibilities and intuitive user interface, according to HyperSynth. It introduces WSM (wave shape modulation) and Complex Oscillator to produce new wave-shapes from two raw sub oscillators. Oresus features two filters with 12 modes, these filters are configurable as parallel and serial or even as a combination of both to achieve new filter types. A modulation matrix with 18 sources and 23 destinations provides an extensive choice for modulation purposes.


  • 2 Complex Oscillators with phase sync, hard sync, PWM, WSM.
  • 2 Filters (10 classic types + Hyper LP8, Hyper LP6) with key track, separate pan and level, polarity switch, parallel and serial outputs.
  • 3 Curve configurable envelopes for filter, Mod and amplitude.
  • 2 LFOs each with 4 simultaneous outputs.
  • S&H with smooth function and selectable input.
  • Modulation matrix with 414 possible paths.
  • Trance gate.
  • Pitch and mod wheel.
  • 100 presets.
  • Built in FX (spread, drive, cross delay, ping pong delay, chorus).
Made with SynthMaker
Latest User Reviews Average user rating of 3.00 from 1 review

Reviewed By S9DD
April 5, 2015

Like SIDizer, this plugin suffers from "hung" notes when used with the sustain pedal. The operation of the sustain pedal in Oresus means that it is impossible to play live. This is further complicated by the voice stealing algorithm when maximum polyphony is reached. (v1.2)

These issues were reported to Hypersynth back in May 2014, and while their support is fast and friendly, they are either unwilling or unable to resolve this rather fundamental problem, claiming the fault lies with modules of MIDI code they have "no access to." They did supply a beta to test with some adjustments but this behaved very strangely - when releasing the sustain pedal, all notes held by hand were released as well.

Again, I am putting this in the "unfinished" category.

One guesses that the underlying fault is shared code between both plugins. Solving the problem in this plugin should in theory create a patch to solve the SIDizer plugin as well.

I can only encourage Hypersynth to solve the issue, and complete an otherwise promising product.

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Average user rating of 3.00 from 1 review

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