Sennheiser HD 5X8, HD 5X9 cable, with mic - VSystem
Amazon.com: Genuine Replacement Cable for SENNHEISER HD518 HD558 HD598 HD598CS HD598SE HD598SR Headphones with 1/4" 6.3mm plug : Electronics
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
Genuine SENNHEISER Short Cable for HD598 SR HD598SE HD599 HD558 HD518 HD 569 579 | eBay
Blue Dragon Cable for Sennheiser Headphones
Sennheiser 5X8ShortCable (with 3.5mm plug) now available for HD-5x8 owners | Page 3 | Headphone Reviews and Discussion - Head-Fi.org
I have a funny feeling the HD598 stock cable wasn't designed with the Sansa Clip+ in mind. : r/headphones
HD 5x8 – Sennheiser
Blue Dragon Cable for Sennheiser Headphones
Sennheiser Replacement Cable for HD 25-1 Headphones (Steel)
HD 5X8 and HD 5X9 Cable 1.2m, dia 3mm – Sennheiser
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