This thread is a few months old but I’m chiming in because I also have a 50’ run of ethernet (Audioquest Cinnamon) between my router and Bricasti M1 DAC/streamer. I use a IFI LAN IPURIFIER PRO between the long ethernet run and my DAC/streamer. It breaks the electrical connection by converting to optical and back to ethernet internally. It also reclocks. I’ve been pretty happy with this setup, particularly for the $300 cost of the purifier. I’m playing around with a short run of high end ethernet coming off the purifier, and a better power supply for it, so it will be probably 3X the cost of the device, but I listen to a lot of streamed music and think it’s worth it.