What is burn in?
Some believe that headphones should be burnt-in to get the best sound out of them. There is no proper or best way to do this, and it’s debatable whether it has any effect at all. Just using the headphones will have the same effect, but if you want to hear what your headphones are capable of without waiting we suggest leaving a CD on repeat overnight at a reasonably high volume (nothing higher than you’d normally listen to). It is generally not a good idea to play sine sweeps or similar through the headphones as it can damage them. The main thing to remember is that this does not have to be done.