KaoX

The deal

$39 at KVR Marketplace (down from $159). Sale runs through August 28, 2026.

What it is

KaoX is an FM synthesizer from XILS-lab that combines three synthesis approaches in one instrument: classic FM synthesis with 8 operators, analog-style oscillators with zero-delay filters, and chaotic oscillators for unpredictable, evolving sounds. It covers FM territory from clean bell tones and electric pianos to complex metallic textures, with a visual interface that makes FM programming significantly more approachable than traditional FM synths.

Who it's for

Producers who want FM synthesis without the usual steep learning curve - KaoX's contextual help and global view keep the signal path visible, making it useful for sound designers exploring FM tones alongside analog warmth and experimental chaotic modulation.

Key features

• 8-operator FM engine with 2 independent output banks and pitch control per bank
• Two continuous waveform analog oscillators paired with zero-delay feedback filters for warm, filter-driven tones
• Two chaotic oscillators and two chaotic modulators for generative, unpredictable modulation
• Contextual help system and global view interface designed to make FM programming accessible to producers at any level