Originally Posted by yipcanjo
As an employee of a well-respected IEM manufacturer, it seems that you are in a position to put this "burn-in" or "not burn-in" debate to rest. I mean, if "burn-in" actually works (and I think it's quite likely that it does), then shouldn't it be able to be verified and documented? Is there an accurate way to discern the output/quality of an IEM, and thus track how it changes over time? Test it...