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 :
OFC BALANCED Audio Cable For Sennheiser HD 595 558 518 598 Cs Se Sr Headphone | eBay
Hifi BALANCED Audio Cable For Sennheiser HD 595 558 518 598 Cs Se Sr Headphone | eBay
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: 2.5mm Balance Cable Upgraded Replacement for Sennheiser HD518 HD519 HD558 HD569 HD579 HD598 HD598 HD599 CS SE SR Headphones, Suitable for M11Plus M15 M17 Audio Player, Cable Length 4.9 Feet :