Beyerdynamic DT-770 / DT-880 / DT-990 Removable Cable Mod
Amazon.com: Beyerdynamic DT 770 PRO 80 Ohm Over-Ear Studio Headphones in Gray for Smartphones & Computers Bundle with Blucoil 6' 3.5mm Headphone Extension Cable, and Slappa Full-Sized HardBody PRO Headphone Case :