Bests way to connect two input sources to one set of speakers?

I bought mine on ebay
https://www.ebay.com/p/Niles-Spk-1-Black-Speaker-Level-A-b-Switcher/1301529465
If you need to switching sub-woofer:
https://www.ebay.com/itm/Niles-Audio-AVS-2-Line-Level-A-B-Switcher/323424938106?hash=item4b4da0e87a:...
Or combination of both:
https://www.smarthome.com/niles-audio-sas-1-combination-speaker-level-a-b-switching-system.html

@reubent
> No time to go into details at the moment. However, if you want more detail, I can get back to you in a couple of days....
Yes, thanks. Here's my equipment:

• Receiver: Yamaha AVENTAGE RX-A1070
• Amp: Yamaha A-S801 Integrated Stereo Amplifier
• TV: LG 4K OLED65C7P

One reason I don't want to run the L&R front pre-outs from receiver to amp is that the receiver introduces about 1 second delay in the audio coming from the HDMI connection on the PC. There is no problem with video and audio sync'ing. The A/V receiver by itself seems to be working properly. I have assumed this was a "feature" of the Yamaha (like a buffer) because my prior Sony receiver did not do this (same 4K TV, same PC, same settings, etc.).

For most scenarios, that 1 second delay in audio starting is not a big problem, so I have not put any time into investigating it.

However, whole-house music distribution that audio delay from running the signal through the receiver will cause this one room to be out of sync with the other rooms. I can avoid that by running the sound from PC to DAC to Amp to speakers without going through the receiver. (Alternatively, I guess I could figure out if there is a way to get rid of the delay in the receiver, but that might end up requiring a lot of time to sort out.)

How is the niles controlled?  Must one use a 12 volt trigger?

> How is the niles controlled?  Must one use a 12 volt trigger?
Yes, for the Niles SPK-1.
The discontinued model, the ABS1, does not need a trigger. I saw the ABS1 for sale on ebay.

I ordered one from the eBay seller. Looks like all I need is a twelve volt source on a switched power strip.