The update is automatically installed if the devices are connected to the Internet. HEOS users only need to subscribe to an Amazon Music HD subscription and can enjoy uncompressed streaming with resolutions up to 24/192. Not only the current network-compatible AV receivers and streaming components from Denon and Marantz support this resolution, but also all HEOS products of the "HS2" generation. HEOS is one of the few HiRes-capable multi-room systems. In the HEOS app you can even search specifically for the HiRes titles from Amazon Music HD: Subscribers to this version select "Amazon Music", then "Search" and enter "Ultra HD" in the search field > "Search" (see screenshots).