What Exactly Does "Burn In" do for Electronics?


I understand the break in of an internal combustion engine and such, but was wondering what exactly "burn in" of electrical equipment benefits musicality, especially with solid state equipment? Tubes (valves) I can see where they work better with age, to a point, but not quite sure why usage would improve cables, for instance. Thanks in advance for your insight.
dfontalbert
you should visit Morrowaudio.com and read about cable burn in. Tons of great information, once read you will understand completely why this is required with all new equipment from cables to amplifiers.
Are you saying that you don't hear components break in or that you do and just don't know why?