Normally the sound of headphones changes only over many years and then mainly in caused by the earpads (less low end since the ear pads get more densily by sweat etc.).
The reason for loosing bass can also be caused by a less tight contact between the earpads and the head. This can happen due to wearing spectacles, long hair etc.
--
kind regards
Horst
AKG hotline
分隔線------------------------------------------------分隔線
耳機 burn-in 可能只是幻覺
真正被 burn-in 的是耳朵
