Changing a cartridge for a way costlier one is not "tinkering" nor it is an embedding control device it is an upgrade of component ...😁
Tinkering is often like walking with your hand without seeing ...
We must learn how to control the main three working dimensions of a system...
And a search for excellence in sound which never end is not a search for excellence in sound but in most case a mental disease or an obsession ...Any study and set of experiments in acoustic end somewhere ...Any speakers building end somewhere etc ...
I listen music now without being frustrated ...I guess i am no more an "audiophile" or perhaps i am an informed one ...😉
Both. In your search for "audio excellence", "tinkering" is one of the procedures. Like changing the cartridge on your turntable. May seem to be "tinkering" to most. At $5,000, I would not call it, Tinkering. Probably closer to Surgery.