What's the little copper wire inside the stereo line?
The audio line has two loops to work, and a small copper wire around the main line is the ground wire,
It should be wrapped around the line, the better quality of the transmission line to use this, to screen interference signal it. Can not receive, will not have a big impact.
Mainly from a screen closed induction, reduce noise interference. Therefore, must be connected, and then connected to the iron position behind the plug, the front two point is to answer the left and right channel line.
