@mc1969
Again you have stated your opinion so what is your point by repeating yourself 3 times other than being argumentative! You are not convincing anybody that they aren't hearing an improvement in their system just because you don't .
I will admit that with conventional thinking I did agree with your opinion until I started getting serious about listening to and improving my system, the same being with a power cable where only the size gauge matters or even a fuse is a fuse , but since I and many others have tried different outlets , power cables and even fuses and found that sound can be influenced in ways that were not thought of in 1969 .