Wi-Fi Range Extender

Yes they work very well with little loss of speed or signal. Even all the way across to a shed at the far end of the house.

They’re easy to connect to but the one I used (a more basic model to the one you’ve listed) needed to be plugged directly into a wall socket as did the receiver.

Luckily there were plenty of wall sockets available.

I don’t know if it created a separate network but there was a slight break in connection (a few seconds) when you re-entered the house and it reconnected to the home router.

With extender, usually the second network has same name with a _2 extension, and requires same password.  Some allow to rename or change password to something else.

Since home audio installations typically are stationary (the components are not moving around the house), the two-network thing has been an absolute non-issue for me.  Set it and forget it.

If you use phone to control, pretty simple to switch wifi networks.  Takes 2 seconds.  Some (I think, don't quote me on this) will work across networks.

I feel like I've controlled my dac/streamers in two separate locations with my phone, where one of those dacs using main network and one using extended network, without switching networks on phone, but I'll have to test that to be sure.  Either way, easy.

I recently installed the TP Link Deco 5 mesh system and so far have no regrets. Setup is VERY simple and uses an app on your phone or tablet. Relatively inexpensive @ $160.