You know I remember a few of the guys in the discovery thread burning in the FX40 and on the FXD80 thread. A couple of the guys tried using colored noise with some mixed results on the carbon nanotube earphones..They ended up using bass heavy tracks to solve the burn in issue..Try throwing some bass n drum heavy tunes mixed in..I just read a report from rickdohc who burned his FX40 at normal volumes for 70 hours. Didn't change much and after almost 400 hours of non stop 100% volume he got a real smooth sounding FX40. Which is what I got after 200 hours of Drum n bass for my pair. I think perhaps normal headphones and earphones only require 100 hours. Carbon nanotubes I would say need more like 200 hours.
Carbon Nanotubes be very stiff drivers so I would actually be some what aggressive on the burn in. 100% Max volume on my Sony Z1060 is like 75% volume of my laptop burn in station. I have that cranked to 85% all day and night.
good tip.. thanks. I will plug it to my desktop station with some bass heavy house/trance music starting tonight then.