At $300 bux a foot, that kind of cable probably boils down to type of wire used instead of shielding techniques. Granted it's probably a directional cable, twisted, braided, and shielded, but instead of using the typical copper wiring, it's more than likely using silver. There is a company out there named Kimber Kables that uses silver exclusively in all there speaker wiring, RCA, and guitar cables. I had some of the speaker wiring, and they really do make a difference.