Ethernet switches are trivial to blind test.
If you don’t already have one, buy a $15 Gigabit switch from Amazon. Hook both it and the EtherRegen up to your home network, placing them both behind a curtain, so that you can’t see which one is hooked up to your Naim streamer.
After familiarizing yourself with how each of them “sounds”, have a friend
- flip a coin behind the curtain
- unplug the ethernet cable from the switch it’s plugged into and
- if the coin came up heads, plug it into the $650 switch
- if it came up tails, plug it into the $15 switch
- record which one it got plugged into on a sheet of paper
Meanwhile, you record on your sheet of paper which switch you think is hooked up. When you’re done, tell your friend to flip the coin again.
Repeat this 20 times. Then compare the two sheets of paper.
I think we both know what the result will be.