Very good AES presentation on inter connects and ground loops.

There is  much more to. It then that ,myself and many others in our audio club some are true electrical engineers. ,for. Example digital noise can  travel house to house that is why I isolate the coaxial filter, plus the Ethernet the Ethernet hub I use has low noise regulators ,linear-power supply,as well. As A  OCXOover controlled precision clock feeding the Ethernet cable , and put in a upto date Modem router combo ,I bought the Motorola 8702 which has docsis 3.1 which is much faster, bigger buffer , even the wifi for the tv is better , and having a Quality LPS power supply to the router a 12v 4+ amp is night and day better sounding then the garbage wall warts that come with the router ,I have -0 wall warts in my system 

and quality Ethernet cables over $4500 the 2 Ethernet, and usb cables Ethernet switch and LPS , efore the dac and streamer .if you want great digital performance 

to surpass turntables youhave to spend $$ with the same precision you give to any

high quality turntable arm and stylus leave no weak link in the chain  ,

and with XLR if all components  are truly balanced for each item then sonically  it’s much more quiet. Transformer coupled. This too cost $$ to do it corrrectly.

Fredrik222 you speak out of ignorance.

myself and many others in our audio club have tested many combinations 

Ethernet cables ,and usb cables ,linear power supplies all have audible improvements all well tested not knowing which were being tested.

myself owned a Audio store for a decade . I have  no idea what your audio system consists of but ,unless your system is of a higher quality you may not hear the improvements ,there are too many variables. I rebuilt Loudspeaker Xovers for a guy over $ 1600 and made a Very large improvement ,he was using $100 Belen interconnects and thought it was good from what he was told , you have to spend 

bare Minimum of $2k just for speaker cables and a pr of interconnects to hear  the nuances in the recordings and at much more $ monies there are cables much better still it all depends on your budget, this applies to everything from Electronics, to Loudspeakers . Synergy is very important ,your dac at minimum $2k to get anything respectable by Audiophile standards ,reference $6k and up. I have heard several hundred Audio systems a $25k system is a good starting audiophile system 

most have $50 k + system if realism and refinement is your goal. These are my opinions and viewpoints and having owned a Audio store can speak through experience and what others expect , the more experienced you are as a Audiophile 

the more you expect if your budget will allow for it.