So, I got the Audiotechnica M50's just two days ago. They are everything I thought they would be and more. The sound quality is something that I have not heard in any other pair. But, they have one problem. I'm one of those guys who lets little sounds get to him....and the left earcup squeak. Not all the time, but sometimes when I'm picking up my headphones and swivilling them up or down to put on my head, I hear a little squeaking sound and its getting to me. Now, on my old pair of Panasonic RP-DJS400's I had a similar problem, but worse. That is, they would squeak ALL THE TIME. I'm worried that my pair of M50's will degrade into that. Can anyone who's had a similar problem testify on this.
Also, when I took apart that pair of headphones, I found around the joints there was a build up of white powder, probably calcium. When I looked at the left earcup of the M50's, I saw a similar buildup near one of the joints. Does anyone know if this is calcium, and if so how they recommend cleaning it without damaging the headphones?