SENNHEISER HD 650 Modified Stock Cable - HD 600, HD 660 S, HD 6XX, HD – Corpse Cable
Cardas Audio Clear Headphone Cable for Sennheiser HD600 & HD650 Headphones - 3.0 Meter - Audio Advisor Inc.
Best Headphone Cable for Sennheiser HD660, HD650, HD600, HD6XX, HD580 - Custom Balanced Audiophile
Amazon.com: Audio Cable Replacement with in-Line Mic and Remote Volume Control - Compatible with Sennheiser HD525 HD545 HD565 HD580 HD600 HD650 Headphone and Compatible with Samsung Galaxy Huawei Android : Electronics