Lumin will requre a wired connection or a WiFi extender.
as for one box solutions:
Cambridge Audio has two streamer/dacs in your price range.
https://www.cambridgeaudio.com/usa/en/products/851/851n
well reviewed, too.
as for one box solutions:
Cambridge Audio has two streamer/dacs in your price range.
https://www.cambridgeaudio.com/usa/en/products/851/851n
well reviewed, too.