PolyKB III & II
The deal
$39 at Best Service (down from $239, 84% off) as part of a sitewide XILS-Lab sale running through August 28, 2026.
What it is
PolyKB III & II is a two-plugin bundle from XILS-lab modeled after the RSF PolyKobol 2, a cult analog polyphonic synthesizer prized for its unusual morphing oscillators. PolyKB III layers on hundreds of dynamically modulatable analog-modeled waveforms, twin creamy multi-mode filters with XILS exclusive 0df technology, and three analog-style envelopes with time multiplication for a fat, warm, immediately usable sound. Both plugins run on Mac and Windows in VST2, VST3, AU, and AAX Native formats.
Who it's for
Producers chasing authentic vintage analog character with room to get weird - synthwave, ambient, and sound-design work that benefits from deep per-voice modulation and unconventional stereo imaging.
Key features
- Morphing analog oscillators give instant access to hundreds of free-running waveform shapes, far beyond typical oscillator-switching emulations
- The Voice XY and Space XY modules let you shape and place each individual note in a 2D or 3D field for subtle-to-wild per-voice variation
- A True Unison engine stacks dense, breathing stereo sounds when combined with those per-voice modifiers
- A 128-step polysequencer doubles as a step sequencer, trance gate, or phrase player, with four lines and sixteen modulation destinations
