And what was used for source?
For what it counts, I "burned in" my X1 for ~100h without listening (was just checking some moments) and hence no "brain burn in" was happening. "Burn-in" was done with one gear and left for playing almost 24/7. I did notice change in sound using same test tracks as in beginning. X2 seems to have about same burn-in time and change.
But this is just my experience and I`m not claiming everyone will notice it with their gear and hearing.
Edited by CoiL - 4/14/15 at 1:51am