Sandwiches
Head-Fier
As of now, sadly, there is not with Apple Music tracks. You have to use a dongle or AirPlay downmixes it all the way to 256kbps AAC and then in some cases transcodes the compressed stream to 16/44 ALAC. There is currently no reason to stream more than High Quality if you are using AirPlay. If you use an external dac (including the $9 Apple one that can do 24/48) that plugs into the lightning port via adapter, that's the only way to get hi-res or hi-res lossless.