Thanks, I’d read store and forward but didn’t understand that either! It’s just PnP for my modest use, but I appreciate the extra know how, thank you.
I though of adding that info for people looking a more detailed/definitive answer to as weather and/or what type of switch to buy and that any direct effect on sound quality does not exist.
Besides that on which we all agree, one of the configurations that can affect the bandwidth for music (which in turn affects sounds quality) streaming is QOS; luckily at home you know what you're doing with it and most routers have very friendly menus of QoS settings.
Yes, sorry for that word, backplane, I don't know other term for it except switching capacity. Probably the corporate language slipped into my brain with time..
Anyway, lots of quality information in this thread even for the pickiest people. Hope it helped.