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 PolyKB by XILS-lab is a Virtual Instrument Audio Plugin for Windows and Mac OS X. It functions as a VST Plugin, an Audio Units Plugin and an RTAS Plugin.
Product PolyKB
Developer XILS-lab
Price (MSRP) $199
Type / Tags
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
 2.1.4  Downloads Released
 2.1.4  Downloads Released
Miscellaneous Information
Copy ProtectionDongle (USB-eLicenser)
Important Note
iLok is also an option for copy protection.

polyKB is a recreation of a very rare, very powerful polyphonic synthesizer released in the '80s by a French company.

polyKB is a polyphonic subtractive synthesizer based on two waveform morphing, alias-free oscillators and a self-oscillating 4-pole low-pass filter.

The oscillators make a large part of the sound of this synthesizer but the filter, recreating a standard analog chip of the '80s, with the help of a very complete modulation section, allow the polyKB to create "incredible and warm sounds, from gorgeous bass to slow evolving pads, through aggressive leads and thin crystal keyboards, without forgetting a wide range of special effects".

The modulation section of polyKB acts like a matrix with five dedicated sources (LFO, ADSR, VCO, NOISE, VELOCITY) and five dedicated destinations (VCO 1 and 2 pitch, VCO 1 and 2 waveform, VCF frequency). To increase the sound design possibilities, six menus have being added, two for the sources, four for the destination, with which a wide range of modules can be chosen (Velocity, sequencer outputs, LFO freq, Filter res, VCO levels, to name but a few).

polyKB also features a powerful polyphonic sequencer. The sequencer can record and play 8 voices independently as well as the pitch and the velocity. To control the sequence, a 2 to 128 steps clock system allows a wide range of rhythms and patterns. Of course the sequencer outputs can be assigned as a source of modulation.

The polyKB offers:

  • Two aliasing-free morphing oscillators: from triangle to pulse, through saw.
  • One 4-poles, low-pass, self-oscillating filter.
  • Two envelope generators (ADSR).
  • Two MIDI-synced LFOs.
  • One MIDI-synced Sample and Hold.
  • One 128-steps polyphonic sequencer.
  • One arpeggiator.
  • Chorus and delay effects.
  • Mono/Unison/Poly playing mode with up to 16 voices of polyphony.
  • All parameters are MIDI controllable.

NOTE: PolyKB is copy-protected by either of the two available dongles: eLicenser or iLok. You choose the protection you want when you purchase the plug-in.

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