https://wccftech.com/apple-musics-highest-resolution-lossless-audio-tier-requires-an-external-dac-to-work/

Apple Music is getting two new upgrades - spatial audio through Dolby Atmos and high-quality lossless audio. The best part is that the features will be available to all subscribers for free. If you have been waiting for the new feature, it will roll out with the release of iOS 14.6 in the coming weeks. The company says that it will have 75 million lossless audio songs by the end of the year and initially it will feature 20 million. What piqued our interest is the fact that lossless audio's highest resolution tier will require Apple Music subscribers to use external DAC equipment.

As mentioned earlier Apple Music's highest resolution tier will require the use of an external DAC. To begin with, Apple Music's lossless audio begins at CD quality that runs at 16 bit at 44.1kHz. It goes all the way up to the highest tier that plays music at 24 bit at 192kHz. For the highest resolution lossless audio, subscribers of the service are required to use an external DAC.