Audio Cable for Sennheiser HD25 HD 25 ii Plus HD25-1 HD25-C Spiral Coiled Cable | eBay
2X Replacement Audio Cable For Sennheiser HD25 HD25 1 HD25 1 II HD25 C HD25 13 HD 25 HD600 HD650 Headphones| | - AliExpress
Amazon.com: gotor 4.4mm Balanced Replacement Cable for Sennheiser HD 650 HD 660s HD 600 HD 6XX HD 25 HD 580 HD 58x 7N Silver Plated Copper (1.2m(3.9Feet)) : Electronics