Replacement Cable Compatible with Hifiman HE4XX, HE-400i (The Latest Version with Dual 3.5mm Plug) Headphones 3.5mm & 6.35mm to Dual 3.5mm Jack Male Cord 2m/6.6ft Bluetooth Headsets & Accessories - Newegg.com
Massdrop x HIFIMAN HE4XX Planar Magnetic Headphones – Black – I.E.T. INDUSTRIAL ANTONIO PRIETO – SINCELEJO, SUCRE
Geekria 2.5mm Balanced Cable Compatible with HIFIMAN SUNDARA, HE4XX, 4
Cable suggestion for Hifiman HE-4XX | Headphone Reviews and Discussion - Head-Fi.org