Full Bucket Music has released a new free synthesizer instrument for Windows. Stigma is a simulation of the Sigma KP-30, a monophonic, bi-timbral synthesizer released by Korg in 1979.

In 1979, KORG presented the Sigma KP-30 “Performing Synthesizer”. This monophonic instrument did not sell by far as good as its famous sibling, the MS-20, and the main reason was that it was a Preset Synthesizer. Now “preset” here meant something slightly different than today’s incarnation of this concept: You could not change a bit of the preset settings, it was all carved in stone… sorry, electronics… andt here were only 19 (!) presets in total.

The engineers of KORG were well aware of this stigma, and so they added one tweakable parameter for each preset plus the option to additively select all 19 presets in every possible combination plus the option to Ring-modulate the 8 Synthe presets with the 11 Instrument presets.

Stigma features

  • 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 comes in 32 bit and 64 bit versions.
  • Fully compatible with SM Pro Audio’s V-Machine.

Stigma is available as a free download for 32- and 64-bit Windows (VST).

More information: Full Bucket Music / Stigma