1. Replacement audio upgrade HIFI cable with Dual 2.5mm to 3.5mm & 6.35mm 2. Length: 1.8 M, spring extension about 5 M 3. Made of internal OFC wire. 4. Jack: Dual 2.5mm to 3.5mm & 6.3mm Adapter 5. It is compatible with Hifiman HE400S / HE-400I ( old version with dual 2.5mm male plug)/ HE560 (with dual 2.5mm male plug) / HE-350 / HE1000 / HE1000 V2 / AudioQuest NightHawk headphones
