[PaulHoule]

It's funny how obscure S/PDIF is despite being (1) the only consumer fiber optic connector, (2) being on a whole lot of gear (almost every DVD player) and (3) being a real answer to the noisy electrical environment inside a PC and the effect that has on sound quality.

It's also obscure that you can make a CD with data in the right format,

https://www.discogs.com/search/?q=DTS-CD&type=all

and connect a CD player with a S/PDIF connector to almost any home theater and you have multichannel music. I have a big Sony 300 disc CD changer that is half full of 5.1 discs and I like how I can put together very ordinary hardware to get extraordinary sound.