Yeah I’ve learned a few things in this thread, and I can see my original question may have not been clear that I didn’t mean like “can I stream from AM to my iPhone in lossless” and specifically meant can I stream *from* an Apple device to a receiving device in lossless.To be fair, your questions have been a bit unclear, making it difficult to fully comprehend what you are asking at times. Airplay has supported lossless (CD-quality) playback since it was released in 2004 (then known as AirTunes). Certain vendors may not support that feature, but all of the HomePods do after a firmware update in 2021. AirPlay requires a device (e.g. iPhone or Mac) to stream to the receiver and AirPlay 2 made some improvements to how this is done, but it didn't change the fact that lossless playback is supported up to CD-quality (16-bit, 44.1 KHz sampling rate). I've used AirPlay since 2005 with different AirPort Expresses connected to stereo amplifiers and they have all supported lossless playback.
In some of your comments it sounds like you are more interested in devices that directly stream from Apple Music without using AirPlay. I don't have enough experience to give an answer about those, but I know that Samsung TVs don't, to give one example.
Bluetooth has come up a few times in this thread as well and doesn't support lossless playback.
It’s reassuring to know that it can be done in CD quality.
As for how the receiver works - I’m open to whatever method. Certainly happy to use AirPlay instead of the device accessing it directly, although my understanding at the moment is that one reason AM can’t stream (to a receiver) in its Hi Res Lossless is because it transmits from the Apple device, whereas other companies, like Tidal, let the device access their content directly. I’m not sure how accurate that is but it’s what I’ve heard.
What prompted this thread was reading that Apple would be changing the current limitation so that Hi Res Lossless could be streamed as well, allowing people to hear above CD quality. But when I read it, it was unsubstantiated and this seemed like an appropriate audience to ask if anyone was aware of such a rumour.