1. Used  RCA connectors ,which is made of copper-plated plug, metal shell, and advantages of metal shell can be shielded from external interference.

2.Used genuine 99.9999% high purity oxygen-free copper audio signal lines , which   specifically designed for audio equipment and music equipment. This line have a more high toughness engineering plastics than ohters , it can imporve the resilience and shielding properties . It has excellent shield performance and the effection of sound is particularly strong .      

3.External plus a network of high-density shock as protection.

4. Package : 1 Pair rca cable