Balanced HD800 cable with 4pin XLR – CustomCans.co.uk Custom Headphone Blog
Sennheiser HD 800 S Over-the-Ear Audiophile Reference Headphones Ring Radiator Drivers, Open-Back Earcups, with Balanced Cable Black HD 800 S - Best Buy
Endorphin Balanced Hardwired High-End Headphone Cable for Sennheiser HD800/S
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CARDAS CLEAR Balanced Cable for SENNHEISER HD800 S HD820 Headphones XLR 4Pin, 2M cord