I've thought about that too. Almost all hi end makers today claim their products sound better after a certain number of hours of break-in. So, let's say I'm at the salon. Trying to decide between to very expensive pieces of gear. If a break-in really did make one sound better, wouldn't you do it at the factory before it shipped out? To give it the edge over the competition? But as far as I know, no one pre- burns in their gear. Apparently that break-in effect is very minor if not important enough for a $30,000 amp maker to bother.
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