I ended up grabbing one of these from ebay for under 200.00 I have an old denon shelf unit (udm30) powering some equally old mirage omni speakers on my back porch, along with an elac sub. I've got the Heos Link 2 connected to it, and based on how it's physically built I feel ok about leaving it out on the back porch which is covered.
I've found that once setup, it's pretty dependable and bug free. I know the dac isn't great but I'm not likely to notice much in this setup. I'm also pleased to notice that HEOS just added Tidal Connect, which kind of solves for the HEOS app not showing the daily discovery playlist in Tidal, since I can just push that playlist from Tidal directly to the HS2 now. This will also benefit anyone with an HEOS enabled Marantz or Denon receiver-preamp. Good on the company for continuing to develop it's capability.