If you search "Korg Z1 VST" online, you will find results. Be warned: 99% of them are clickbait, malware-ridden ZIP files, or fake "download now" buttons.
The Z1's engine is celebrated for its extreme depth and versatility, often described as a "monster" for sound design Vintage Synth Explorer Forums The Korg Z1: A Hidden Gem that Changed the Game korg z1 vst
You don’t need a Z1 anymore because modern software is arguably better. If you search "Korg Z1 VST" online, you will find results
The Korg Z1 VST is a software emulation of the Korg Z1, a popular analog modeling synthesizer that was first released in 1997. The Korg Z1 was known for its unique sound and features, and the VST version aims to bring that sound to the digital world. The Korg Z1 VST is a software emulation
: The Z1 VST utilizes Korg's Virtual Analog technology, providing a digital take on traditional analog synthesis. It offers two oscillators per voice, with capabilities for pulse width modulation, sync, and ring modulation.