Poyatu Repair Cable For Sennheiser Hd1 Hd 1 On Ear Over Ear Bluetooth Wireless Wired Headphones Cables Cords With 6.35mm Adapter - Protective Sleeve - AliExpress
How To Fix Sennheiser 2 Pin Connector Cable DIY - YouTube
Sennheiser Momentum In ear - Repair | Headphone Reviews and Discussion - Head-Fi.org