Romanesque you know little about digital . I owned a Audio store for years.
pits pretty simple ,digital travels from home to home Ungrounded, bringing in Noise,
that $5 wall wart that comes with the router is pure junk $2 worth of parts it just adds additional noise to the circuit. A Linear power supply stops that noise and distributes it much cleaner ,that is a fact ,it can be measured and well as easy to hear. Then get a Quality digital hub or ditch at minim7m the $600 LHY,SW-8
and both need a decent quality power cord ,why ? The the power cord is a filter it shields ,filters noise before going into electronics. If this were not so ,no one would
be using a LPS power supply, or buying $1,000s of dollars in aftermarket power cords. You do as you please it’s your $$ ,I doubt 1,0000s of Audiophiles are wrong 99% of Audiophiles use upgraded power cords ,depending too on their budget.
I go to many Audio gatherings per year and they all have similar items .
a top quality Ethernet hub can cost over $5k and night and day better sound Ansuz from Denmark. D2 my brother has with their Ethernet cables , line conditioner ,takes you to another league in streaming the. Only drawback is the $$ which is not cheap,