USB cable really improves?

I very much have the same experience as others here. I was skeptical about the idea about USB-cables making any difference, until I tried different cables an realized the better cables made a very significant improvement. I am not a technician, so I was stuck in the layman misunderstanding about digital signals. I had an explanation some weeks ago by an audio engineer, who explained to me that the digital signal basically is transferred as any analog signal anyway, but I didn´t really understand how he meant. The explanation above is better for me, the layman nerd. The cable I use for the moment, from Supra, has separate "channels" for current and signals.  

Hi Lapwan, I think you're right. I've heard the sound improve by changing my coax cable both initially and when listening to music a few days later. I found fitting ferrites (see another thread on the forum if interested in details) helped as well.

Hi Lapkwan, it was in this thread http://audio-forum.gspaudio.co.uk/power-cords_topic1506_page2.html?KW=ferrite where Graham explained the best position for placing ferrites on a cable to suppress radio frequencies.