The problem I have is I can change nothing and things may still sound subtly different to me day by day, listening session by listening session for reasons unknown.
But the differences are subtle and seldom ever affect my end enjoyment. I suspect my own mood and perhaps mindset of the hour to be a factor especially when it comes to any emotional response to what I hear. "Dammit Spock, I’m a person not a listening machine." Probably a good thing.
I do not have time to dabble with fuse directions normally. If there was a problem to start with and I thought it might be that, I probably would. but I can’t even account for how things that vary regularly out of my control like weather, air pressure, humidity electricity etc. are affecting what I hear exactly at any particular time versus another.
Or how can I even assume my gear always works consistently and that there is not some natural audible variation over time? There is a lot of complex technology in these toys.
So I just throw in the towel and be happy I like it as much as I do regularly. Not the "audiophile" way of thinking I’m sure.
I guess if you flip or change fuses enough with enough a/b tests the results become obvious.