I have been forced to change my mind on so many things that I won't call much of anything snake oil unless I try it myself, but so far, for me, the money they want for fuses is excessive.
As for the cables don't matter crowd, why then did Tektronics years ago when they were THE preeminent O'Scope manufacturer have a square wave output that you attached the probe cable to and then adjust a variable capacitor in order to attain the cleanest square wave on the screen of the scope? That trimmer cap should have been useless if you listen to the ignorant folks here! Yet it made quite a difference, and if you amplified the signal, listened to it, the crispness of the wave would certainly differ as the square wave became more and less distorted.
Certainly with an old O'Scope and a complex signal that signal is too complicated to see the effect of different cables, though if you had a storage scope that could capture multiple images, and overlay them using the same instant of music, with different cables, there is no dbout that the difference would be visual as well as audible. I am sure that some research facilities have such a scope, but they are not commonly available and are not found in catalogs the last I looked at scopes. Anyway many like speakers and equipment that renders virtually any music pleasurable to them. This sort of equipment doesn't have great detail, which is quite fatiguing to many people. I find their systems fatiguing. So, don't concern yourself with the low resolution masses, they enjoy what they enjoy, and that is as it should be.
Personally until I purchased a particular DAC, I never concerned myself with power, but it was rather bright, and made listening annoying. I got an isolation transformer and could listen to virtually everything then
Power cords can be woven so as to filter certain frequencies too. I have not tried changing the sound of my system with such filters as the transformer worked for me. Not to mention how many differently woven power cords there are and how difficult it would be to find the "best" one. If you moved, the line noise could well be completely different at your new dwelling setting you back to step 1 with power cables. So, that's a bridge too far for me, it just seems impractical. If you are seeking the ultimate you'll likely go there, but my system sounds so realistic now that I am just not worried about it, another DAC, perhaps, but that's about it, and the DAC is pretty solid though on some few songs it's still a bit bright for me.
That's the trouble with asking such questions. You just don't know others' standards and if your goals align with theirs, etc. If you are looking for different things, no matter how great their advice is to someone, it may be worthless to you!
