Optical vs Ultra Rendu.

singingg - super interesting journey, thank you for sharing. I'm hoping to get as close to what you have achieved, but somehow, without 9 boxes. You've definitely taken separates to another level!

rbstehno - "It’s funny that people are worried about sq when they use usb to their dac. If you want to increase sq, stop using usb."

Interesting comment, but both Ultra Rendu and Optical Rendu use a USB connection to the DAC.

I also had a Wyred 4 Sound 2v2SE DAC that the owner (E.J. Sarmento) recommended to connect both his MS music server and a Roon Nucleus to via USB for best sound quality.

How do you connect?

yyzsantabarbara - thanks for the link

Then to add more confusion, the wiring diagram on the Small Green Computer site show a simple fiber ethernet cable going from the router to the optical Rendu.

https://www.smallgreencomputer.com/collections/recommended-solutions/products/systemoptique-server-player-combo-sonictransporter-i5-or-i7-cdr-opticalrendu-4-port-gigabit-switch-with-fiber-port-and-power-supplies

So, what is all the extra hardware seen in this Hans Beekhuyzen video starting around 2:05. Such as the SFP media converters. What is the difference between these two set ups and will there be any difference in SQ? 

https://www.youtube.com/watch?v=q0A0l6keKTg

SGC - That is because the switch has an optical output