Although I keep trying to convince myself its brain burn, it isn’t, its a mix of both with a bigger role on headphone burn, in my believing . Namely the smoothness on top end was very noticeable for me, as you referred. There is a caveat however, I was simultaneously “burning” the Clear and the desktop AMP so this sums 3 burnings ... LOL. I don’t really think the AMP add much to the equation so I give all the credit to Clear - It was great from day 1 and stunning after some workout
Personally through my experience on head fi so far, I believe in headphone burn in. However, I do not want to start any senseless debate with anyone that might derail this thread, and I have reached a point where I don't really care what is going on because I am satisfied with the sound, so whatever works, works.