Let me admit to being a skeptical person by nature. The idea of a “burn in” period for such small drivers of truly wireless earbuds strikes me as nonsense.
So, I Googled. I found articles that say a person should “burn in” headphones and articles that say that it is nonsense. Which leads me to believe that reality is somewhere in the middle. I believe that earbud drivers do change over time, but it seems more likely to be 100s or 1000s of hours instead of 10-20. And it seems likely the difference in sound is probably difficult to discern.
My experience with both the Air 2 Pros out of the box and the Air 2s that I have had for a while leads me to believe that the Air 2s are noticeably louder. Not to say that I believe there is something wrong with the Air 2 Pros, just that they are not as loud as the Air 2s and don’t seem to have as full of a sound. It is difficult for me to believe that the difference in the loudness between the two pairs would be made up through a few hours of “burn in”.
My original post was to see if anyone else could confirm my belief. I am open to the possibility that I’m hearing wrong. That’s all.
Doing a side by side comparison as I write this again confirms by belief that the Air 2s at max volume are indeed louder than the Air 2 Pros at max volume.