I could be wrong but I don’t think Chromecast Audio supports Bluetooth, just streaming from cloud services like Spotify, Tidal, etc. I completely agree with the Bluesound Node2 as being the best bang for the buck for wireless playback; streaming music, internet radio, and Bluetooth. Excellent sound quality for the money and easy to set up and explain to less tech savvy folks.
Add On For Streaming
I recently purchased a vacation home in San Miguel de Allende Mexico and have installed a nice small system consisting of Focal 1008 Be monitors, Luxman integrated amp and an Esoteric X05 SACD player to play a bunch of discs I shipped down. I rent the place out when my family isn’t using it and the one request I have gotten is that guests want to play music wirelessly from their phones or IPads through Bluetooth which of course is not possible with the current set up. Is there a single box Bluetooth receiver and DAC I should look at? I play vinyl at home so I am totally unfamiliar with what to do. Your assistance will be greatly appreciated.