Chinook91 you are absolutely correct in your skepticism. The typical in house wiring, in the US, is a 15 amp circuit with 14 gauge wire and could easily run 50 feet or more. This terminates at a circuit box and a breaker on one end and an outlet at the other end. All of this will have much more impedance, discontinuities, etc, than the last few feet of cable. If it is worth spending thousands of dollars for the last 3 to 6 feet, then it must make sense to spend $100K or more for the wiring from the power company connection to the outlets these cables are plugging into. This is just a really good way for cable companies to make a ton of money from people that don't understand physics.
That said, the placebo effect is proven to be real, so I'm sure people that spend $5K on a PC can hear the difference.
That said, the placebo effect is proven to be real, so I'm sure people that spend $5K on a PC can hear the difference.