I think that living room audio electronics design is a solved problem. There's nothing new under the sun. All competent amplifiers should sound the same in a given setting. Since grifters gonna grift, they invent new 'problems' that they then happily sell a solution for. Cables are a good breeding ground for these types, since cables are cheap (izz cheep!) & easy to make, and you don't need to know anything about electronics to make & sell them along with preposterous and unproven claims about their performance. It's basically audio homeopathy.