The customer reviews for these 8000 dollar audio cables on Amazon are hilarious. But this phenomena isn’t limited to Amazon. Best Buy, who has never met a cable they wouldn’t like to overcharge you for, has an HDMI cable by the same company for sale with similar humorous reviews.
I’m not sure how the people at AudioQuest sleep at night, knowing they are essentially ripping people off. HDMI is a digital signal. Either the display it’s attached to receives it, or it doesn’t. A bad cable could give you a high error rate, but you’d probably notice that. The spec wouldn’t have been designed to require a 600 dollar cable to get error free transmission. I’d also be surprised if the speaker cable sold at Amazon doesn’t perform any better than other audio cables sold at a fraction of the price, if you ran each through a distortion analyzer over the range of human hearing.
Conventional use of the above formula falsely assumes that it is acceptable to have a 63%Â reduction in current flow and an 86% reduction in power density at the center of a conductor. However,Â this formula does not by itself describe at what depth audible distortion begins. Listening (empiricalÂ evidence) shows that audible distortion begins at somewhat lesser depths.
The human ear is actually a pretty poor instrument. The question is whether these claims stand up to the harsh truth of the distortion analyzer. All this sounds like a lot of inapplicable technical detail meant to try to sell you an overpriced cable.