OIDIO X-Modified Balanced Cable for Sennheiser HD5X8 & HD5X9 Headphones
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 :
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4.4mm 3.5mm 2.5mm Balanced Audio Cable For Sennheiser Hd 595 558 518 598 Cs Se Sr Hd 599 569 579 Hd 2.30i 2.20s 2.30g Headphones - Earphone Accessories - AliExpress
4.4mm 3.5mm 2.5mm Balanced Audio Cable For Sennheiser Hd 595 558 518 598 Cs Se Sr Hd 599 569 579 Hd 2.30i 2.20s 2.30g Headphones - Earphone Accessories - AliExpress
HC-6-B: Locking 2.5mm Balanced Headphone Cable for HD560s and more – Hart Audio Cables
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Geekria Apollo 5N Copper Silver Mixed Audio Cable Compatible with Senn