I'm selling my used Sennheiser HD 595 headphones (with 3.5mm adapter) because I upgraded to the HD 650. These actually sound very much like the HD 650s when plugged directly into my Sound Blaster Z sound card - I think the 650s need a good amp to bring out their true potential. Cosmetically they are in good condition; there is some worn off paint on one side where it rested against the desk, and the headband shows signs of wear but is still in good condition. I replaced the ear pads with new ones, and the ear cups are 80% in the headphones but might need a little more fitting (I just did this tonight). Overall, these are among the best headphones you can buy for the money, they're very comfortable, and they sound great.
Price includes shipping to the continental 48 U.S. states and payment via PayPal.