"break-in" period? . . . how to

Maybe an easy question for you but need to ask: if I have a new product and want to pass the "break-in" period fast, I have to rum the unit (amp, preamp, or any other) 24/7 until the expected time passes but...if is a new preamp is it neccesary to connect it to an amp?, and if its an amp, must be connect it to the speakers? volume almost oof or higher?, what I dont know if the information must flow to the next step in the chain or just to be proceessed in the same unit? Silly question but not clear in my mind.
Thanks in advance.