I am using the m-control app (bubbleupnp) recommended by PS Audio with their direct stream DAC. I currently subscribe to tidal and qobuz but am interested in trying Amazon HD, just don't know how to get it on my dac. If anyone figures this out, please let me know
will be interesting to see how much WAN bandwidth is required

From GSMArena:

"If you want to stream music, you’ll need at least a 1.5-2Mbps LTE connection for HD quality and 5-10Mbps for Ultra HD. A large data allowance is a must too – a 3 and a half minute song eats up 51MB in HD quality and 153MB in Ultra HD. A lossy track is 9MB."

https://www.gsmarena.com/amazon_music_hd_launches_with_two_lossless_audio_options_in_four_countries-news-39226.php

Note: these figures are not verified.
My initial thoughts were that Amazon might be trying to go after Apple like they have done in the movie market (i.e. Netflix) - maybe go after the audiophile market as a longer-term objective.  For me Roon integration would be essential.
Yes it must offer Roon integration! I use both Qobuz and Tidal. Both services sound different from each other in Roon. Thus far I like Qobuz a little more. It is less aggressive and more relaxed sounding..,warmer.  Others will like Tidal more as this is subjective and system dependent. Comparing the exact same 16/44 recording on both services reveals a sonic difference.  Seems these services have a “sound” beyond the numbers.