The AV cable is responsible for the transmission of audio signals and plays an important role in the entire audio system. Good and bad sound lines not only use different materials, but also have different internal structural principles, resulting in certain differences in signal transmission performance and resistance to external electromagnetic interference.

The most reasonable investment principle to ensure better sound effects is to choose the high pitch line for high pitch, the medium pitch line for medium pitch, and the low pitch line for low pitch. Some people purchase high-end stereos, but they choose low-end audio cables to save money. Driving a Mercedes to a gas station and filling it up with 90% cheaper gasoline doesn't make much difference. On the surface, they may save money, but the actual effect is not good. They are unable to fully leverage Mercedes' role.