I have similar case upgrade on my modem and Wi-Fi router, it's upgrade the PSU iFi iPower-X for modem & router each. I can hear the music improvement on soundstage, airy, realistic. 😏😎
ifi LAN iSilencer
I discovered this Ethernet signal purifier for network audio streamers, just by chance, while surfing the internet. I have an extremely highly resolving hifi system. After reading all the positive customer comments and reviews, I said to myself, what the heck, only 89 bucks, let's go for it. After receiving the ifi, as recommended, I plugged it into my audio switch, then plugged one end of the ethernet cable into it, and plugged the other end of that ethernet cable into my DAC/Streamer. Now, I already have a variety of audio tweaks throughout my system, including my speakers. But when I added the ifi, the background got even deeper, darker and blacker. It was absolutely amazing!!! This little gizmo worked exactly as advertised!!! Highly recommended.