I have a pair of HE-500 that I am looking to downgrade to maybe a Sennheiser HD650. They are terminated in 4 pin XLR so make sure you have an amp with the proper output. They are the version with both the velour and pleather pads and include the traveler's carrying case. I bought these from another head-fier a year and a half ago so I am not sure of how old they are exactly. I would rate them 7 out of 10 as the paint on the yoke is starting to become slightly discolored. I am willing to ship to the lower 48 states (please do not ask about shipping elsewhere). I would strongly prefer to trade these for a pair of used HD650 + $200 or sell them outright for $525 shipped and I will eat the paypal fee. Thanks for looking!