Corpse Cable for Sennheiser HD 600 / 6XX / 650 / 660 S - 4.4mm TRRRS P
Sennheiser Headphone Cable — Woo Audio
Amazon.com: Geekria QuickFit Audio Cable Compatible with Sennheiser HD 560 S, HD599, HD598, HD 598SE, HD 598CS, HD 598SR, HD579, HD569, HD400 PRO Cable, 2.5mm Jack AUX Replacement Stereo Cord (6 ft /