I hope my opinion will be useful, I am writing this product review Sony WH 1000XM4 Canceling Headphones Phone Call. I did not notice the difference between LDAC, AAC and SBC by ear (I listened to lossless), although I was chasing sound quality for a very long time and choosing a codec for a very long time. As a result, I came to the conclusion that when listening to music, Spotify, etc, even AAC is enough and it makes no sense to invent something .