I have my Eversolo T8 connected with ethernet, but just short of the streamer, I have an English Electric Ee1 network noise isolator, then a very short .5 meter high quality cat 6 cable into the streamer. The isolator makes a discernable, but not earth shattering, difference in the sound. I am going to try using the sfp input with an ethernet to fiber converter. Haven’t heard much feedback from anyone who has tried this so I don't know if it will make a difference, either positive or negative. It may be a waste of $100, but I've certainly wasted a lot more on this hobby in the past!!