For sale these Sennheiser HD660s in excellent used condition. I am the second owner, I bought them from another member here about three years ago, he had only used them for about a month for a review. I used them in my office for about 6 months, but since covid they haven't had any use. They are in perfect working condition and sound excellent. No visible marks or scratches anywhere that I can see. The pads are in great condition and have plenty of life left. Comes with all the original stuff, the box, manual, standard cable, 4mm balanced cable and the 1/4" - 3.5mm adaptor. Let me know if you have any questions!