I have Heos and it doesn’t support HD casting, just bit perfect HD and UHD playback from its own app.From other site that I have seen, heos, playfi and music cast all support amazon hd. I have wiim connected on Yamaha AVR using external dac then goes to analog input on AVR. Here’s my take, using wiim and tidal connect the sound was coherent and engaging than using music cast, this maybe due to the quality of external dac. However, using amazon music on wiim app sound compressed but music cast sound fuller and more dimensional. Next week updates is important as I have both services. Is the amazon ultra can be played on wiim apps or amazon native apps on next week release?
i think next week’s release will be WiiM app support for lossless 16 bit HD and 24 bit UHD Amazon Music (as I have said, I dispute WiiM’s nomenclature), and we’re all waiting to see if those resolutions are capable from the Amazon Music app casting to Wiim - if they are, it’ll be the first non amazon device to do so.