https://www.tomshardware.com/news/ethernet-switch-for-audiophiles
The Ethernet Switch UEF costs a substantial $2,595, which will make it appealing to only the most diehard of audiophiles. For comparison, your average, off-the-shelf 5-port GbE unmanaged switch from TP-Link costs less than $20. And a Netgear GS305P v2 will set you back $70. So stepping up to the Ethernet Switch UEF is a big ask.
The unit is equipped with Active EM Cell technology which claims to close the gap between digital audio quality and good old-fashioned analog tapes and LPs. To "further improve audio quality," the switch is constructed from a solid billet of aluminum and uses carbon fiber to eliminate chassis vibrations from making their way into the switch (which the company claims could interfere with the digital signal). There's even an optional SR Ground Block that serves as a ground for the switch.