Happy to help.

There is a big pile of weirdness in the fact that what formerly was THE best way to move audio from source to pre-pro has become an anachronism -- https://www.cnet.com/news/is-the-optical-cable-dying/

It is rather odd that as many home theater receivers and even relatively pricey pre-amp / surround processors are focused on HDMI and USB there are several simpler devices that seem to be embracing optical audio -- https://www.digitaltrends.com/home-theat...fier-echo-plus/