True or False?

is it true or not true in (your experiences) that the better your audio components are, the less they respond to various tweaks?

Not true. Just as a race car responds more to tweaks, so does a high resolving system. Part of the problem in tweaking a lesser system is that it doesn’t respond. Thus my skepticism in Power cords 15-20 yrs ago or so. Tried them. Nothing there. 10 yrs ago, aha. They did work along with many other tweaks I dismissed i.e. Oyaide R1 outlet. Then too, I had developed more listening skills which is essential.

I concur with Artemis-5. I went through the same progression that he did. As my system got better and more resolving my listening skills also improved . My appreciation for music was always there but as I continually upgraded my system;I heard more details that were obscured by my earlier systems.

The better they are the less tweaks needed to make them sound good.  See how that works?