Audiofeil is right on in my experience! Acclimation of the human ear and mood are my 2 most important break-in variables. I have never seen/heard in my 35+ years in the hobby a component of mine change significantly enough to really make a strong claim about break in. You know sometimes you listen to your system and think it's magic....I'll never change a thing! And other times its just OK. It's probably not the components. I agree warm up probably makes a difference as I suppose everything settles and becomes more stable but it is still not real significant. Just my opinion. It certainly makes for good conversation among us audionuts.
I've got a friend who is just becoming an audiophile and he bought his first high end cables and declared "I think I already hear a difference but maybe it's just in my head."..and I said what does it matter!!!
I've got a friend who is just becoming an audiophile and he bought his first high end cables and declared "I think I already hear a difference but maybe it's just in my head."..and I said what does it matter!!!