Originally Posted by Alberto01
Burn in time for Rockit Sounds R-50: 0 hours. Sound doesn't change with use.
Burn in time for ATH-CKS77: 500+ hours. Improvements in sound quality were very gradual and still noticeable and needed after 500 hours.
If burn in was just a brain process then it would be likely that I would have found some changes on the R-50. I did not.
I'm a bit of a burn-in agnostic.
The scientist in me knows for a fact that materials undergo wear and tear, and that the driver will change after a while. The only catch for me is that the reported changes are always positive.
By the same logic, armatures also undergo burn-in. They don't have a large diaphragm like the dynamics, but the arm of the armature () also undergoes wear and tear.
Moral of the story: The brain is a powerful thing. Don't underestimate what it can do to how we perceive sound.