A friend worked at sennheiser about 15 years ago and I took advantage of his cost-price deal on a pair of HD700. They are, without a doubt, the best sounding and most comforted cans I've ever used. Now, I treated them badly, throwing them into ruck sacks etc, and eventually one of the transducers failed. I contacted Sennheiser who charged me €140 to "repair" them... They sent me a brand new set with the thick silver core cable (I never sent mine back so now I have two, and those cost over 100 bucks by themselves)