Switching between two receivers — one set of speakers

Thank you, gkelly — or thank you AI?

Thank you lordmelton.
The sub is really what I struggle with. 
I considered the Douk VU3 Pro (I like those meters), but the Schiit is most likely better quality. 
Either way, I’ll need a solution for the sub. 
Can I do something with a Y-splitter? How would I wire that though?

I should probably mention that both receivers have pre out and the sub is active.

A custom switch by Maple Tree would be ideal. It could accommodate some additional switching as well. And the REL would be a nice upgrade to the Klipsch. 
I just don’t have that kind of budget right now. 
I may consider these kinds of upgrades once I’m happy with my overall setup, and aware of all desired switcheroo.

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

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.