Amazon Launches Lossless "Hi-rez" HD Music Service

Just realized that Chromecast audio doesn't send out Ultra HD via toslink (downgrades to HD or Standard).
This really grinds my gears...grrrr...

I just found a lot of the Sheffield lab collection on Amazon HD. Fantastic stuff. Very well done and high dynamic range. (even if it's 16/44)

Just type in Sheffield labs in the search section. Have fun!