Считаю очень правильные мысли с сайта TNT-Audio.

Let's make a bold statement: "The best Cable is No Cable"

Let's make another one: "The Ideal Cable does not change the Signal traveling through it in ANY way."

Let's make a third one: "No Cable can improve the sound-quality of a system, they only make it worse in varying degrees."

And indeed, the best Cables I came across make things worse only a very little bit. The worst however....

Переводить не буду, думаю всё понятно.