Selling my lightly used, like-new HD 600 Headphones. I've only had these for a month, they are in perfect condition. These are the most neutral headphones you can get at this price point, they sound amazing and are very comfortable. They do require a headphone amp to drive properly. These are 400 on amazon. http://www.amazon.com/Sennheiser-Dy...d=1385141622&sr=8-1&keywords=sennheiser+hd600 Cash only.