I am getting a little bit worried as I have read a thread on another forum (headfi) that my headphones the HP890 are not very well built and tend to crack after about 8 months and the cable input socket fails, occasionaly it comes loose now so I its likely to be case in mine. I bought them from crappy Dixons so if they break physically can I still return them under the guarentee to get them repaired or will Dixons blame me?