Can a component after complete breaking reverse ?

Terryakhan: The relevant answer to your question is that you can get responses ranging from Porziob's to most everyone else's (and then there's the question of what constitutes break-in vs. warm-up), but the bottom line is if one can't determine this for themselves via listening, then it really needn't matter. Personally, I've never been aware of new cable break-in, and also never sure when it comes to components *other than speakers and cartridges* (and new tubes) whether break-in or simply warm-up is occurring. But that may well be because most of my stuff has been bought used, and what Albert says is right. Anyway, if can't hear it then don't sweat it.