There is none out there......

Not a fan of the AC / Ethernet adaptors. IMHO the pure Wifi to Ethernet adaptors are better. Have a single Ethernet cable you hook to your streamer. Use a phone Wifi analyzer first to ensure strong signal and that you aren’t competing with other routers on the same channels.  Also, these adapters only need a single unit to work, as opposed to one near the router and one near your streamer:

https://amzn.to/3RvVOJu

All you guys have really given me a bunch of options......Thank you all for your suggestions......Now I've just gotta' go do it!

Hifi sales people think you should spend more? Will wonders never cease...

I have 2 Bluesound Nodes and they work very well, sound great and the app is nonpareil. Try it first, at least, to see what you think.

BTW, I use a Simaudio Moon 390 in my main system, but the Node is no slouch. The Mind 2 app is not nearly as good.

Lots of options here. I went with the TP Link to feed my Project Ultra Stream Box / Schiit Yiggy. I could tell a slight improvement over my Wi/Fi only. As mentioned above, I was concerned about added electrical noise. But it seemed an improvement. What’s funny is I just recently installed Solar and requested an entirely new service panel as my house is 35 years old. The panel was installed a month ahead of solar. I do a lot of late night listening and I could hear a sound quality improvement over the previous panel. I was not expecting that, but upon reflection I changed out the panel as it was shot and noticed lights flicker occasionally while running a high current device. Now I’m thinking about moving up to hardwired and an optical link to entirely isolate my device. As far as streaming goes, I’m sure I’m at the low end and will invest in a better streamer after that. I would say considering the items above are relatively cheap try a couple different ways and see. Cheers , Mike B. 

+1 Innuous Zen mini Mkiii