As a follow-up… I just noticed that in using the HyBy app, the M50 manual implies using Airplay for the iOS app, and using DLNA for the Android app. That is, it never occurred to me the iOS app cannot be used for DLNA. Anyone know for sure?
To follow-up further, I’ve heard back from Shenzhen Audio, presumably in response to my questions regarding the HiByMusic app (iOS) support for DLNA submitted to Topping support. To quote…
Apple only supports Airplay
Android only supports DLNA
Which is a bit misleading because the Neutron player (available from the iOS app store) supports DLNA, and allows me to pull bitperfect high-res PCM from my NAS DLNA server.
However, I do understand this to mean that HiBy did include DLNA access/support in their Android version of HiByMusic, but not the iOS version.
Searching the internet, I cannot find where Airplay, even the latest version, supports delivering sound quality better than 16bit/48kHz. And, Airplay is conceptually different. With DLNA, bitperfect PCM data is pulled directly from file on the DLNA server. With Airplay, down-sampled PCM is streamed from the iOS device and is no longer bitperfect.