GEEKRIA Audio Cable Compatible with Sennheiser HD 599 SE, HD 599, HD 598, HD 598 SE, HD598 CS, HD 598 SR, HD 560 S, HD 400 PRO, HD 579, HD 559 Cable, 2.5mm Replacement Stereo Cord (6 ft / 1.7 m) : Electronics - Amazon.com
Sennheiser HD 5X8, HD 5X9 cable, with mic - VSystem
Genuine SENNHEISER Short Cable for HD598 SR HD598SE HD599 HD558 HD518 HD 569 579 | eBay
Blue Dragon Cable for Sennheiser Headphones
GEEKRIA Audio Cable Compatible with Sennheiser HD 599 SE, HD 599, HD 598, HD 598 SE, HD598 CS, HD 598 SR, HD 560 S, HD 400 PRO, HD 579, HD 559 Cable, 2.5mm Replacement Stereo Cord (6 ft / 1.7 m) : Electronics - Amazon.com
HD 5X8 and HD 5X9 Cable PTT, 1.2 m, CTIA 3 mm | In-Ear, Noise-Canceling, Wireless, Bluetooth, Music; Entertainment, Travel, Sports - Sennheiser Discover True Sound
Ear Pads Headband Compatible HD 598, HD 598SE, HD 598CS, HD 515, HD 555, HD 595, HD 518 Headphones Black (Velvet) - AliExpress
Sennheiser Replacement Cable for HD 25-1 Headphones (Steel)