This is my take -first time ever- on a Casio CZ. It's a really underrated Phase Distortion synthesizer. to me, It sounds almost on par with 4 opFM synths. and maybe 6op
Casio CZ-230S, phase distortion vs. FM
Casio CZ-5000 Phase Distortion Digital Synth Vintage Keyboard flagship model | eBay
Phase Distortion Synthesis – Electric Druid
Phase Distortion Synthesis – Electric Druid
MATRIXSYNTH: Casio VZ-10M Interactive Phase Distortion FM synth ( rack version of VZ-1 )
6 of the best FM, additive and phase distortion synths
Phase distortion synthesis - Wikipedia
Workshop: Casio CZ/VZ und die Grundlagen der Phase Distortion Synthesis - AMAZONA.de
MATRIXSYNTH: DSP Synthesizers Casio CZ Phase Distortion for Your Modular and Other DIY Projects