Gold-plated 4N pure silver wire, which has a fast sound rise and enables delicate and expressive reproduction, maintains a clear high range with high resolution, while maintaining a well-balanced, natural and lively mid-low range. It will come true. In addition, by making it an 8-core configuration with 35 wires per core, the sense of localization and the amount of information are enhanced, and even subtle changes in sound and natural reverberations can be expressed. Furthermore, the flexibility and durability of the conductor itself are dramatically improved by making the conductor circular. It acts as a stable signal transmission even when exposed to bending and sudden temperature changes.