First of all, these cables are incredibly large, thick and not very flexible. You need to make sure you have enough space for them due to their rigidity and weight. You should also buy a little longer than you need as you don't want to strain the device's receiver plug. This is the anaconda of power cords. Arrived in premium stylish packaging. I bought these for isolation while trying to eliminate some of the noise from my subwoofers in my 2.2 player. They don't "open up the sound" or "create velvety mids, chocolaty bass and minty highs". Let's get that out of the way and stop spouting audiophile bullshit. The sky didn't part and my 10k system didn't suddenly sound magical. They seem to have helped with the hum though, although that may be a good old audiophile placebo. This is the jewel in your audio gear so you don't spend insane amounts on cables.