Dual HD800 cable for Sennheiser headphones – Hart Audio Cables
Archimago's Musings: MEASUREMENTS: Sennheiser HD650 (~2010-2012) and HD800 (~2010). A comparison of two "Reference Class" headphones, and a look/listen to the "Sennheiser veil / darkness". [Inexpensive 2TB SSD and inflation in consumer electronics...]
Sennheiser HD800S Review | Bloom Audio
Blue Dragon Premium Cable for Sennheiser HD800s, HD820
Amazon.com: Sennheiser HD 800 S Over-the-Ear Audiophile Reference Headphones - Ring Radiator Drivers With Open-Back Earcups, Includes Balanced Cable, 2-Year Warranty (Black) : Electronics
Review: Sennheiser HD 800 (Early vs. Late Production) – Tamed Beast. – Systematic Sound