KZ C 8 Pin Oxygen-free Copper Silver Plated Upgrade Cable for KZ ZSN Earphones(White)1. After Apple official MF certification, the Apple 8 Pin interface is fully compatible, plug and play, no window. 2. Single strand 25 core, four strand 100 core, the average silver plated layer thickness is 0. 214 micron, the probability of loss of sound signal is greatly reduced, and the sound quality is improved immediately. 3. The sound is delicate, natural, full and round, and full of resolving power. The mid low frequency details, the sense of