I have for sale my mint condition Sony Z1000 headphones. These are currently the flagship model from Sony and sound like it, as they are extremely neutral and are able to reveal the most subtle nuances in one's music.
They are, in all respects, in "as new" condition with all of the original packing and accessories, including 2 connecting cables.
These phones are very easily driven and, IMO, represent one of the best choices available for use with portable devices.
Price is $385 which includes insured shipping with tracking and paypal fees. Sorry, CONUS only.
Thanks for reading!