Guys, chill out. Some BA drivers will change with use. Some will not. Our brain will adapt to different sound signatures too. There is no universal truth that applies to all headphones and all IEMs due to the incredibly wide variety of transducers in use.
I reckon: Give your impressions, but importantly list the type of music you were listening to, and how loud you listen. Those things have the biggest effect above all.
I reckon: Give your impressions, but importantly list the type of music you were listening to, and how loud you listen. Those things have the biggest effect above all.