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 quadraSID by reFX is a Virtual Instrument Audio Plugin. It functions as a VST Plugin and an Audio Units Plugin.
Product quadraSID
Developer reFX
Price (MSRP) No Longer Available
Type / Tags
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
 1.6.2  - Released
 1.6.2  - Released
Miscellaneous Information
Copy ProtectionSerial Number


  • Up to four independent SIDs can be emulated with a single SID plug-in.
  • Each SID has three independent oscillators and a fourth "Galway-noise" channel.
  • Lofi, Normal and Hifi render modes.
  • Chip-Model selector per chip (6581 / 8580).
  • The SID emulation has been enhanced so each oscillator can have its own volume.
  • Built-in arpeggiator for each oscillator.
  • Four LFOs, four envelopes and four "functions" for each oscillator.
  • Programmable wavetables for each oscillator.
  • Three play modes: Mono, Poly & Multi-timbral.
  • Nearly every parameter can be modulated by MIDI or other internal modulators.
  • Velocity sensitive Virtual-keyboard can be toggled on/off.
  • Beta-tested by Chris Hülsbeck, the C-64 SID guru.
  • Very low CPU consumption.
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Average user rating of 9.07 from 15 reviews

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