Sennheiser Replacement Cable for HD599 and models HD5X8 through HD5X9
6.35mm Replacement Cable Extension Cord for Sennheiser HD 518 558 569 579 599 598 CS
Amazon.com: Geekria Audio Cable Compatible with Sennheiser HD 599 SE, HD 599, HD 598, HD 598 SE, HD598 CS, HD 598 SR, HD 560 S, HD 400 PRO, HD 579, HD 559
Amazon.com: HD598 Coiled Cable with Lock Connector Replacement 1/8" and 1/4" to 2.5mm Male AUX Extension Cords Compatible with SENNHEISER HD6 HD7 HD8 HD515 HD518 HD558 HD579 HD595 HD599 HD598 SE Headphones :
New Replacement Cable Headphones Wires For Sennheiser HD598 HD558 HD518 HD 598 - AliExpress