Switching between two receivers — one set of speakers

I’d like to know too. 
in my case though, there are more sources involved. In addition to streaming it’s  CD and TT. 

Here you go:

https://www.bobwireaudio.com/spk1

That’s an interesting device. I like the auto-sensing. Would that still work with the subwoofer in my setup?
I don’t like the price tag so much, though. I understand, it’d be super convenient, probably high quality and super safe, but for now I hope to keep it below $125 for the switching of receivers, if possible. Part of what this switching is meant to do for me is to help me compare and decide if it’s worth keeping both receivers. 
Happy to upgrade that part later in case I decide to keep both. 

I guess if I’d go separates, with a good amp and a versatile preamp, I may be able to have the preamp do a lot of the switching and picking. Things is, I really like my receivers and rather invest in upgrading the main speakers.