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 Astra Turbo Quasar by Syntheway Virtual Musical Instruments is a Virtual Instrument Audio Plugin. It functions as a VST Plugin, an Audio Units Plugin and a VST 3 Plugin.
Astra Turbo Quasar
Product Astra Turbo Quasar
Developer Syntheway Virtual Musical Instruments
Price (MSRP)
Type / Tags Synth (Phase Distortion)AmbienceAmbience ReverbAmbientAmbient SynthesizerAnalog LeadsAtmosphereAtmosphere SynthAtmospheres and EffectsAtmospheric Textures and TonesAtmospheric TonesBass SynthesizerBassline SynthesizerCinematiccinematic padsCinematic SynthsClavinetDance LeadsDark AmbiencesDark AtmospheresDark Grainy Textures and Tonesdark texturesDelay / EchoDigital LeadsDual DelayDual Phase Distortion SynthesizerElectro Leadselectronica synth leadsFuzzy Pad Tonesgrain texturesHi-Pass / Lo-Pass FilterKeysLeadsLFO ModulationOrganOrgan SynthPad SynthPadscapesPhase DistortionPhase Distortion SynthPhase Distortion SynthesisPiano / KeysPop Synth LeadsReso BassResonance SoundReverb AmbientSolo LeadsSoundscape GeneratorSoundscapesSpace MusicSynth (soft pads)Synth AtmospheresSynth Drones Pads Texturessynth keysSynth LeadSynth LeadsSynth PadSynthesizersynthesizer waveformsTexturesWaveform GeneratorWaveformsWaveshaperWaveshaper DistortionWaveshaper Synth
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
Downloads Released
System Requirements
- Windows 7, Windows 8, Windows 8.1, Windows 10.
- DAW host application with VST2 support (64-bit) and / or VST3 support (64-bit)
- MIDI Keyboard controller.
- An ASIO compatible sound card is recommended for low latency real-time play.
Downloads Released
System Requirements
- macOS operating system and all previous OS X.
- DAW host application with Audio Unit support. These plug-ins can be used to process audio by applications such as Logic Pro, GarageBand, Cubase, Ableton Live, REAPER, Studio One Professional, Ardour, MainStage and Digital Performer among others.
- MIDI Keyboard controller.
- An ASIO compatible sound card is recommended for low latency real-time play.
Audio Demos
Miscellaneous Information
Copy ProtectionOther
Max. 6 items
Latest Version Changes [view all]

Astra Turbo Quasar is a dual phase distortion synthesizer that dynamically change the harmonic content of a carrier waveform by influence of another modulator waveform. It can be used to create spacey pads, synth keys, leads, atmospheric textures and ambient soundscapes.


  • Two Phase Distortion Oscillators: Offers 16 different single-cycle waveforms per channel.
    • Modulation Depth: Controls the wave shape distortion for left and right channels. The values can be changed by turning the slider or by entering a value from the keypad and pressing enter key.
    • Waveshaper Section: These combo boxes presents a double selectable wave shapes with 5 basic waveforms: sawtooth, square, pulse, double sine and sawtooth-pulse plus 3 resonant waveforms: resonance 1 (sawtooth), resonance 2 (triangle) and resonance 3 (trapezoid). Provides independent controls for the left and right channels.
  • ADSR Envelope Generator: A four stage envelope generator with independent control over each stage: attack, decay, sustain and release.
  • Envelope Modulator.
  • Filter Section: A smooth state variable filter with cutoff frequency, resonance and filter mode to switches the filter between lowpass, highpass, bandpass, or band-rejection filter types, offering a simple and effective tone control to shape and color the sound source.
  • Low-Frequency Oscillator: The LFO rate and depth modulates various aspects of the audio signal, you can apply effects such as vibrato or tremolo.
  • Reverb/Ambience: Brings a sense of spatial depth and width to sound, from small to huge sounding spaces.
  • Loudness: Adjusts the volume (amplitude control).
  • Dual Delay: Stores the input signal and plays it back after a certain amount of time, creating from a subtle echo to a pronounced blending of previous sounds with new sounds. Improves the stereo image by adding a slight delay to one of the channels. Parameters includes:
    • Amount: Controls how much delay is applied to the signal, which is to be delayed.
    • Time: Modulation to vary the delay time dynamically, to control independently the left and right channels. Time can be changed by turning the knob or by entering a value from the keypad and pressing enter key.
    • Feedback: Regeneration of delay, to control independently the left and right channels. The values can be changed by turning the knob or by entering a value from the keypad and pressing enter key.
  • Mono Mode: Possibility of turn the synth into monophonic mode.
  • Glide: The rate at which portamento slides the pitch between two notes, when playing in monophonic mode.
  • MIDI automation: Implementation of MIDI Continuous Controller parameters for use with external hardware control via DAW.
  • Preset Manager: 'Browser' to load and save presets and banks, enabling to export to *.fxp (VST2 Preset), *.fxb (VST2 Bank), *.vstpreset (VST3 Preset), *.aupreset (Audio Unit Preset) plus two generic formats (plain text).
  • 30 presets.

{See video at top of page}

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