Good streamer that does not need wi-fi or internet to play local files

Let me reiterate I am NOT planning to use BT to play the local files but to "control" the music playing. The music playing is thru the USB connection which support hi-rez files to which I was referring.

I have two humble systems including Wharfedale Linton / Burchard S400 II, Parasound A23 / NC 2125 v2, Ifi Zen Stream, Topping E70 Velvet / Smsl Do200. My budget for the streamer is up to $1k or slightly over.

Although not what I am looking for but it is good to know Auralic Aries G1 could stream music using BT when the internet is out.  Thanks, @jond.  It will be a viable option if the G1 is equipped with latest BT standard as mentioned by @vonhelmholtz 

Does your iFi Zen stream allow Bluetooth control and plays from usb drives? If so, add a great power supply and upgraded cables and call it a day. I use to use such a setup and played locally stored music on usb drives and a NAS, but I used a Roon gen. 10 NUC core. Still need to sell, so thanks for reminding me.

Nope, ifi zs does not support BT and that is why I am asking the question. And I can tell you why I am asking the question BECAUSE the ZS’s wi-fi suddenly quits on me. The plug-in internet is still working but wi-fi connection is DEAD. In 8 months! What a reliable product from British company?

Now, with Intel NUC 10, are you talking about a dedicated mini PC for music listening with i7 core, 2 usb connections (USB 2/3), type C port, ethernet port, HDMI and BT connection? How many GB of ram? OTHER THAN ROON, what software can I use to control software for music playing thru BT on cell phone? How is the SQ? I just switched from PC/Mac to streamer 8 months ago and it will be hard pressed for me to go back (although being a dedicated PC) if SQ is not good.

The NUC runs Roon Rock, which interfaces via Ethernet to the streamer and is controlled by the Roon software running on a computer, phone, or notebook.