@kingbr take a look at Alpha Audio.net, they test (and importantly, listen too!) power supplies and Ethernet switches. TP Link, which I also have, did not test as well as some, but sounded excellent, imagine that…can anyone say tube amp?
I originally had the IRIS feeding a Topping D90LE by I2S, a world-class measuring DAC. Sounded great, detailed, transparent, clean, tight bass, extended treble, etc. However the Pontus NOS really took system to a better place, more organic, warm, yet still detailed and with more dimensional sound stage.
Happy listening. Cheers,