I am selling my Sennheiser HD518 headphones with the upgraded cable by Fiio, the Fiio RC-HD1.
Amazon sell these for £110, now on sale at £76. The Fiio RC-HD1 upgrade cable for the HD518 costs usually £60, but on sale on Amazon at £33.90.
I am asking £55 plus postage. These are only 3 months old and bought from Amazon, so if required I could forward a copy of the receipt.
Obviously, comes with the original box, headphones, original cable / adapter and Fiio RC-HD1.