Apple music how to reach the best quality?

Hello, I own a NDX2 and I would like to make the most of the new Apple music hires. If I’m not mistaken, I can get by airplay 2 a maximum of 24-48 ( which is already not so bad ). Otherwise I have to connect my iPad to the Ndx to get 24-96 or 192. But you can’t plug it into the USB socket. So what does it do to benefit from it and with what type of connection? I know dragonfly is a device to maximize sound on headphones
Thanks for helping me

2 posts were merged into an existing topic: Apple Music HiFi Tier incoming?