For me personally, if you like music, to listen to the music on your set up. This is what counts.
We do not need measurements of this or that. If something needs measurements, I wil probably not hear it. Our hearing instrument is not that good, right.
Company's claim, that their stuff is better or the real thing, i belive them
I wonder who started to claim that You need to change the fuse, to get a better sound - fuse that has to do one thing only , protect the equipment. Or that their cable is better than from someone else - although is made from the same material.
I am quite sure it came from the audio industry, not from the listeners.
Electricity do not care about the components it has on its path. Had no quality so it can not be changed with other components. Like Rotel said some time ago that they replaced in the new Michi amp 100 percent of the components. A platform for speakers or something like this, maker claiming that it is improving the sound - 50 percent better. Wow, really .