What's the difference between 1.5m express line and 1m sound express line?

The difference between 1.5 meter express line and one meter audio express line is as follows.

1, the difference between the length. 1.5m express line is longer, and 1m audio express line is shorter.

2, the difference between high frequency signal loss. 1.5m xunhao line has more loss, while 1m audio xunhao line has less loss.