Ethernet switch worthwhile?

As to comments about " testing" and "measurable" , we all know or should know sound related to music is not just numbers. You can take one preamp or amp and compare measurements compared to similar and one will sound way better than the other. Measurements cannot always define actual sound characteristics.  One may be dry and overly analytical and one may be warm and musical and sound more natural.  Just my thoughts on forums I see on here regarding this hobby and passion. 

Audphile1, Yes that's it. Showing up in couple days and I'll report back. 

Regarding the iFi LAN iPurifier Pro, in my case it was an inexpensive minor improvement using an Aurender N150, and not effective using an Innuos Pulsar.  To make things even more confusing there was no improvement at all until I got the upgraded iPOWER  power supply.  So kinda like what I said before. Too Many Variable’s. You won’t know til you try.

My fiber optic modem's switch is all I require. 

Ethernet switch worthwhile?

most with high resolution systems would say yes, although it is more of an ’optimization’ step rather than a fundamental upgrade

meaning get your speakers, room, amplification and source components well chosen and dialed in first before doing switches, cables and so on