Looking for a WiFi interface

Sigh.  If running cable in this room was an option, I wouldn't be asking specifically about wireless interfaces.

Thanks -- I'll check out SVS & Rel, both trusted names in my book.

The SVS SoundPath Tri-Band looks like a pretty good fit for a mere $200.  Stereo, full-range frequency response, three selectable WiFi frequencies.

@aschuh  The Denon looked like a good fit, but unfortunately, it's discontinued.

The SVS & Rel interfaces seem to target powered subs, so they're mono.  I see expansion modules, but I'll look first for a simpler topology.

FWIW, just for the heck of it, I moved my current wireless receiver a few feet away from a little amp in the back of the room. That amp has built-in Bluetooth, and although it's not paired with anything, I don't think the radio can be completely disabled. 

This was a long-shot, but, at least for one day in a row, the drop-outs have vanished.  Holy cow, could a fix be as simple as that?

My copy of Rhino's "Quadio" Joni Mitchell Asylum Albums SACD arrived last night.  One thing that was strange was that the Atmos mixes -- downmixed by my receiver to 5.1 -- seemed to have greater ambience than the remastered stereo tracks.  Almost like added reverb.

This suggests to me that my wireless interface has more latency than I'd like.  I may order the SVS Tri-Band interface today.

...and I just did. Thanks, everybody, for your help.  This low-latency, stereo, WiFi interface looks like just what I need to do the job, no more, no less.

Follow-up: after a few days of extensive use, the SVS unit still works great.  No latency issues, no drop-outs, although I did lose some volume. 

Nice little product.