I don't think this thread should be closed until we reach a conclusion, in the form of a correctly administered, double-blind test.
That won't happen. For one, nobody is able to do this without first studying up on how to conduct a proper blind study.
Measurements won't happen, and if any were done they'd be well below the threshold of human hearing.
If it happened and a proper blind test and measurements were published, there would still be plenty of "believers"
Take for example the shelf loads of Homeopathic remedies sitting on the shelves at drugs stores everywhere. While there are some medicines like aspiring (ASA) that have had double blind studies for many benefits, many other on the shelf remedies have no blind studies or studies at all. The blocked off pharmacy in the back is where the tested drugs are.
No studies homeopathic remedies means good money for placebos.
Some actual studies have shown these homeopathic remedies are useless, yet they're still on the shelf.
The homeopathic remedies first try to convince people that you have an ailment. Some by posting in forums on the internet. Others in big ads or getting themselves shills and media coverage. Some people may take a pill, and they may feel different, but in the long run, it may be no help and actually harm them. They may never get the right medicine.
Snake oil of yesteryear had some dangerous compounds or addicting drugs in them. Future studies may prove the same for some of the off the shelf homeopathic snake oil remedies.
These cables are placebos. Snake oil, homeopathic remedies, for non existent ailments that the manufacturer is trying to convince people that they have. The manufacturer is not providing any proof. Some people are going to believe.