One of the main advantages of the new codec is its ability to adapt to variable cellular connections. This means you can enjoy studio-quality audio when the network conditions are optimal, and minimized rebuffers when you have poor reception or the network is congested.
The xHE-AAC codec also supports loudness management, making it possible for all titles to play at a consistent volume. Once you set the volume at your preferred level, you will no longer have to keep changing it when you switch from one title to another.
Netflix says it found people switched from their phone’s built-in speakers to headphones 7% less often when listening to xHE-AAC. In case of high dynamic range content, they switched 16% less.