What gets people's knickers in a knot is being TOLD that their panties are in a wad. It certainly won't get them to listen in earnest, and I can't blame anyone for tuning out someone who alternates between cogent arguments and put-downs, however convincing the former may be.
Telling someone they have an incorrect notion regarding a topic they don't understand isn't disrespectful. Direct? Yes. Honest? Probably. A put-down? No.
This is particularly true when the correct information is directly at hand, and also widely available from other sources.
The only thing missing is the willingness to seek knowledge above base assumption and belief. Until that happens, this "discussion" is at a stalemate.
If you use the tools of music to make your living, educate yourself about how they work. The participants in this thread who have engineering, acoustics, electronics, or otherwise applicable backgrounds have no agenda other than to present correct information. This information is meant to help other forum members make educated decisions about gear and music.
If you don't understand why a hyper-priced power cable cannot affect your amplifier's performance when compared with a quality cheapie, there are many people here willing to explain why. The paradox happens when you are unwilling to do some background in order to understand the explanation. The "Don't use your math/science on me" approach is a complete contradiction of the express interest in an explanation.
If you are truly curious about some of the reasons an expensive power cable
can not make a difference, be willing to listen and do some footwork yourself. It's called learning, and it's good for you. Nobody's trying to sell you anything. If anything, we're trying to prevent you from spending money you don't need to spend! How does that benefit us? Not at all, other than having helped a fellow bass player out.
For the record, in a
double-blind test, neither the person administering the test nor the test subjects know which of A or B is currently being tested.
Also, the psychological terms "confirmation bias" and "cognitive dissonance" help immensely to explain why someone who has just spend way too much on a cable will firmly believe in its ability to improve sound.