The additional LAN socket at the back of DX Gen3, I was told by the dealer that it will be use for Ethernet Isolation in the future. That's all I know, he did not mention any details. I have had the DX Gen 3 for over 10 days now and it sound is very very nice, IMHO smooth, natural and organic (analog like?) is what comes to my mind when listening to it. I was using the ultraRendu with ISO-Regen both powered by 2 LPS-1 and the music is stream from Synology NAS with Roon Server. The DX Gen3 sounds substantially much better than my previous setup (which at the time I thought was sounding extremely good).