Ok, so, are they IEMs that many ppl have found be affected by "burn-in" and You also have completely new units to compare?
If You read on previous page, one user had clear difference when comparing IEM with thousands of hours vs. new pair.
I addressed this in paragraph 3 of section 1.2. Not going to go too deep into this, I wasn’t trying to debunk burn-in but rather explain my thought process on why I don’t believe in it.
Never heard something change drastically after burn-in and that’s my own personal experience. If someone else hears clear differences, that’s good for them but irrelevant in this case. If we were simply two random people on the internet, what makes his experiences more valid than mine or vice versa?