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 Kx-Synth-X16 by KX77FREE is a Virtual Instrument and a Virtual Effect Audio Plugin. It functions as a VST Plugin and a VST 3 Plugin.
Product Kx-Synth-X16
Developer KX77FREE
Price (MSRP)
Type / Tags Synth (Modular)Synth (Analogue / Subtractive)
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
  Download Released
System Requirements
32-bit version: 5.2 (VST 2.3): XP sp3
64-bit version: 6.09 (VST2-VST3 3.6.8): Seven x64 with Visual C ++ Redist Package 2015
Miscellaneous Information
Copy ProtectionNone
Important Note
Done with SE, KX77FREE SEM coded in c++. Polyphonic: 32-bit version: 5.2 - KX-SYNTH-X16.zip 64-bit version: 6.09 - x64-KX-SYNTH-X16.zip Monophonic: VSTi 32-bit version: 5.2 - KX-SYNTH-X16-M.zip VSTe 32-bit version: 5.2 - KX-SYNTH-X16-FX.zip

KX-Synth-X16 is a virtual analog modular synth plug-in based on the EMS VCS3 structure, but with some additional features.

Common features with the VCS3:

  • Three variable shape oscillators, tweaked to simulate the color and bandwidth of VCS3's oscillators.
  • 16*16 pin matrix with feedback connections.
  • LP filter, 18 db per octave with self oscillation.
  • Noise generator with EQ.
  • Ring modulation.
  • Two external inputs.
  • XY joystick.

Added features:

  • Polyphony up to 6 voices. Total control of the polyphony features with the extended KXMOD system.
  • Each voice can be controlled with relative parameters (KXMOD).
  • Analog sequencer (CV & gate) with a memory of 256 CV and 256 gates, files saved on disk, 2 accent lines, random clock, keyboard input to transpose or to record the CV.
  • Mini knobs to adjust each matrix modulation, 0 to 1.
  • Modern skin with notepad and variable color background.
  • Html help file.
  • You can adjust the response curve of the oscillators.
  • The original ASR (trapezoid) is extended to 2 ADSR with Attack Reset mode, Host and internal sequencer synchronization.
  • Delay fx with host synchronization and LFO modulation. It replaces the original spring reverb.
  • LFO, Sample & Hold and third ADSR envelope added, monophonic modulations, they can replace the external inputs (In1, In2).
  • Keyboard scalers.
  • X Y matrix MIDI controllers.
  • All main parameters have a MIDI CC controller.
  • Velocity to envelope segments, cut off and volume.
  • MIDI in splitter.
  • Omni MIDI output to control external monophonic instruments and build polyphonic ensemble, each instrument is one voice.
  • Sequencer MIDI output.
  • KX presets:
    • 27 polyphonic instruments.
    • 12 unison presets.
    • 36 monophonic presets (v1.04).
    • 17 sequencer demos.
    • 14 tutorial and initialization presets.
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