Snake oil of the year?

Judging by the tone of your OP, you never tried an Ethernet Switch? They may or may not impact SQ depending on your own system, and your listening skills / preference. I don't know your system. But, judging by the picture on your profile, with the (right or wrong) assumptions that that picture depicts your system, I don't think an Ethernet Switch should be your top priority right now. 

Linus Tech Tips is a reputable YouTube tech channel. They’re currently investing a lot of money in a new facility so they can test different electronics / accessories.

It’s no surprise that a blind test showed that the claims AQVOX makes about improvements to sound quality are without merit. As the video states, we’re dealing with digital data. If there were audible changes in the sound, then the data must be different when received by the DAC.

You can test this yourself. Connect a PC to your audiophile switch. Select a music file to copy. Create a SHA-512 hash of the file (see below for some tips). Copy that music file to another PC on the switch, network attached storage, or even Google Drive (if you can reach the internet through the switch). Then copy that file back to a different location on the PC. Create a SHA-512 hash of the copy. Compare the SHA-512 ’fingerprints’. If they match, then you know the switch isn’t the source of the change in sound quality.

Generating a SHA-512 hash...

on Windows (at command prompt):

certutil -hashfile [file] sha512

on macOS (using Terminal):

shasum -a 512 [file]

on Linux

sha512sum [file]

I have the M12 switch from JCAT.  It is hugely better than the standard switch I replaced.  If you have not heard a good switch you should.  So tired of network experts who know without listening.

It is important to be clear that not all network switches are being made fun of, just this one (AQVOK Switch SE) when Linus Sebastian open up the box to investigate.  Linus employs 80 people in his company, and is hiring 14 more according to his job posting, he is known to be reputable in the hardware circles.  I believe he has 22M subscribers in all his channels/distributions. 

On the advice of someone in a position to know I use a D-Link DGS105 with an ifi power wall wart  The advice was that this would give what "audiophile" devices at about $600 will give.  You can buy and try on Amazon.  Be sure to ground the switch--there is a grounding screw.

It made a noticeable improvement in my system for very little money.