In my experience, wired has always sounded better, except for one product, the Auralic Aries Mini. There is however a fundamental flaw with wired Ethernet, it acts like a long aerial that, in addition to passing your data, picks up RFI/EMI from your local environment.
In my opinion a good RFI filter is essential. The ENO by Network Acoustics is cheap and transforms the listening experience. Link to their site here https://networkacoustics.com/
In my opinion a good RFI filter is essential. The ENO by Network Acoustics is cheap and transforms the listening experience. Link to their site here https://networkacoustics.com/