I've used a similar kit by TP Link between my router feed and Node N130.
It's a no brainer for the relative small outlay. It helped my Node no end, noise floor decreased significantly. Much more relaxed, and no longer "grainy"
My router is in the next room where the TV, Sonos, BRay player, Phillips Hue Bridge, TV Cable box all live and feed from - quite a lot going on/noise. The kit in the above post puts a fire break on all that noise transferring to your streamer via ethernet.
Granted, the 2nd convertor in the chain introduces its own noise, but this can be reduced by swapping the stock wall wart for the convertor with an ifi low noise power supply, or something similar.