I use a awg10 lowest resistance , my Electrician,Audiophile installed a 4 wire
2 grounds ,one common ground ,the other a insulated isolated ground on a separate Copper buzz Bar, amd a 2 inch 4 ft long ground
contacts bought commercial 30 amp breaker heavy silver plated copper breaker.
these streamers I tried this ground setups totally eliminated the need ,A little green computer , and uptone audio ether regen is excellent ,the only better
then the Uptone audio Ethernet hub ,is the synergistic research but is expensive around $2k. Streaming sounds so much better and buy the Motorola modem router combo it’s $270 on Amazon but excellent.