Stigma is a software instrument VST simulating the KORG Sigma KP-30 Performing Synthesizer from 1979.

The plugins main features are:

  • Nineteen Presets with individual filters, envelopes, and amplifiers
  • Two band-limited oscillators with four footages (32′, 16′, 8′, 4′)
  • Synthe preset section:
  • Eight presets including Noise and Ring modulator
  • Individual lowpass and global highpass filters
  • Instrument preset section:
  • Eleven presets, Delayed Vibrato effect
  • Effect section:
  • Portamento, Quarter Tone, Keyboard Sensor (aftertouch) and more
  • Tweaks (not to be found in the original Sigma):
  • Up to 64 voices polyphony with Velocity
  • Chorus/Ensemble section
  • Preset editor
  • MIDI Learn – all parameters can be controlled by MIDI CC
  • 40 additional presets by kraftraum
  • Double precision audio processing
  • Plug-in supports Windows and macOS (32 bit and 64 bit)
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