PolyKB III by XILS-Lab
The deal
$49 at Audio Plugin Deals (down from $199), a 75% discount. Deal expires August 18, 2026. PolyKB II is included free with the purchase.
What it is
PolyKB III is a polyphonic software synthesizer from XILS-Lab that emulates the legendary RSF PolyKobol 2 hardware synth from the 1980s. It pairs warm analog character with three morphing oscillators offering hundreds of waveform variations, dual multi-mode filters with self-resonance, and deep per-note modulation for sounds that range from vintage pads and leads to modern evolving textures.
Who it's for
Sound designers and electronic music producers who want an analog-modeled polysynth with real modulation depth rather than a simple preset-browsing instrument. It suits anyone building layered pads, expressive leads, or experimental textures that need per-voice sonic variation.
Key features
- Three morphing oscillators generate hundreds of waveform variations for constantly evolving timbres
- Two multi-mode filters with self-resonance and three envelopes plus two tempo-syncable LFOs shape the tone
- Voice XY and Space XY modules add expressive per-note modulation across the stereo field
- A 128-step sequencer with four lines and sixteen destinations, a true unison engine, and a built-in arpeggiator round out the sound design toolkit
