I bought the cable for connecting an MP3 player connected to the AUX input in the car (radio). Previously I had another, rigid cable, in which there was a cable break after a few months. This cable has the perfect length, and must be connected very well due to the felxiblen spiral turns and the cable is very tidy. Since the cable is relatively thick and a bit stiffer than the old one, I hope it durchhaelt longer. It can also be simple and space-saving put away when not in use. With the "high-fidelity" I can not comment because the audio signal is connected to the headphone MP3 player to the AUX input of the car radio. The signal is therefore not directed via high-quality components. The result is for the car but perfectly adequate. The music is clear and no hum or other noise that sometimes occurred with the old cable (even before it was broken). The cable is not cheap (but still acceptable is EUR 4.50 paid, and not the current EUR 6.99), but it is well made and does the job. I am very pleased.