[Scion9066]

Looks like it should be mandatory:

https://en.wikipedia.org/wiki/SBC_%28codec%29

As of A2DP version 1.3, the Low Complexity Subband Coding remains the default codec and its implementation is mandatory for devices supporting that profile, but vendors are free to add their own codecs to match their needs.

[tookmund]

It should be, but I’ve never gotten it to work with any Apple Bluetooth headphones. Only static unless I switch to AAC.