Ok, finally got a Audioquest Carbon USB cable. Connected M1 MacBook (fanless) to 808v6 as DAC. Output in Mac setup was able to set to 24bit/192. Works flawlessly which is Apple Music stream library via iTunes. Also downloaded SiriMote and pair it with an Apple TV remote to be able to use it to control iTunes. Great idea if you are sitting too far from your laptop.

As for the sound quality, my initial findings is, it is not as good as Tidal/Roon combo which I also have. That setup is with MD600 and 808v6. I compared a few of my regular tunes between the Apple stream vs Tidal and definitely Tidal sounds better. More detail and more imaging.

I’m suspect it’s endpoint since there’s no other endpoint that support the Apple source like you mentioned.

DSP7200SE, 808.6, MD600, Esoteric K-01 CD Player, Tara Labs's The Cobalt AC Power Cable, Tara Lab's The Zero Evolution Digital Cable, Audience Adept Response aR12TSSD Power Center