A simpler solution, which doesn't add more noisy power supplies is this one. Galvanically isolated and 4k V breakthrough voltage:
Network Acoustics Eno Streaming System vs SGC Optical Isolation System
Has anyone directly compared between the two? If my conversion isn't off, it looks like the Eno Streaming System is roughly $1,000 compared to the SGC Optical Isolation System at $350 (sale) w/linear power supply.
Eno:
https://www.networkacoustics.com/product-category/streaming-systems/
SGC Optical System: