Tips to improve the sound of music streamer -- using a network and USB isolator

Music Streamer sound improvement method 1:
Hi-End Level PiCorePlayer Music Streamer Production (1) --- Two Raspberry Pi Streamers Full Version -- • Hi-End 等級 PiCorePlayer...
Music Streamer sound improvement method 2:
Use a network and USB isolator (this video)
The above two methods are to reduce interference. Only doing one of them may not improve much, but adding each of them will make a lot of improvement.
Solder the network cable to the RJ-45 socket and simply connect to the RJ-45 according to the color of the transparent plug. The general color order is as follows:
T568B: orange white, orange, green white, blue, blue white, green, brown white, brown
T568A: green white, green, orange white, blue, blue white, orange, brown white, brown
My DIY events vary from big to small, and I will have several larger and professional DIY projects later.