Anybody want a laugh?

Robert, no, I’m not an electrical engineer. I asked the question because I’m trying to separate peoples responses into a couple of buckets. One being “opinions and experiences worth taking seriously” and the other “crap I read in the comments section on Amazon and decided to parrot on AudioGon as fact”. 
You’re in the former category. 

MSEE and about 15 years of pure electronics both at the board and semiconductor level, and then 15 years somewhat "involved", and almost as many in variety of acoustics.

So really nobody here has stepped forward and actually tested the highly modified switch manufactured or rather upgraded by a highly respected audiophile products seller. Snake Oil, snake oil.

The same switch which actually has these reviews...
as well as computer audio forums..

https://positive-feedback.com/reviews/hardware-reviews/fidelizer-etherstream-network-switch-2/

https://6moons.com/audioreview_articles/fidelizer/3/

http://hifiknights.com/reviews/accessories/fidelizer-etherstream/

On the other hand, I also saw this review,
https://alpha-audio.net/review/review-fidelizer-etherstream-switch/2/


"Now we are curious what a nicer adapter would do on the SG110D-08. So the default switch. We’ll take a Sbooster 12-volt version and connect it to the switch. Poe: Yeah… that’s a step. And to make it even nicer: he immediately plays away the Fidelizer Etherstream. The Sbooster immediately brings an extra piece of peace and control. More than the Etherstream. Those who buy smart can find a Cisco for 40 euros and with 329 for the Sbooster you are 30 euros cheaper. Not good news for the Etherstream."

“Peace & Control”. 

Please, Rix, if any of us were to actually listen and confirm these findings, WTF would we be listening for? 

Don’t you see the problem with the use of these nebulous superlatives?