I design studio electronics, and self-styled audiophiles drive me nuts. The weirdest are the wire weenies who think 187 strands of 16 different guages of wire will make a difference, regardless of real physics or electronic theory. Then, there are the tube idoits who think a 14 watt single ended tube power amp must sound better than a well designed, well constructed solid state or tube power amp. I also know of guys selling very expensive power cords who tell you it will "lift the veil" of cloudy sound and other dufi (plural of dufus) who sell strange dots to stick on your walls, swearing they will absorb all the bad sound.
There are real, qualified audio experts, but these people are smoking something. From their smiles, I know it's good sh8, and they aren't sharing it. :Q