Hey I purchased the ATH m50x recently and I love everything about them but the leather on the headband concerns me, it appears to fold tightly and crack I don't know if that could cause it to rip or not and if it is just mine or that happens to all of them Im just very paranoid about taking care of my stuff :p here's a picture:
yeah i don't think that is something you should be to worried about, it seems like its just wrinkles... just like in the bend point on the front of leather shoes.