Amazon.com: NEW NEOMUSICIA Replacement Cable Compatible with Hifiman HE400S, HE-400I, HE-400i(Dual 2.5mm Port), HE560, HE-350, HE1000, HE1000 V2 Headphone 3.5mm / 6.35mm to Dual 2.5mm Jack Male Cord 3meter/9ft : Electronics
Amazon.com: FAAEAL Balanced Cable Replacement for Hifiman Sundara HE4XX HE-350 HE1000 HE-400i(New Edition) HE560, 2.5mm to Dual 3.5mm Works on M11+, M15, M17 Digital Music Players(2.5mm) : Electronics