Why no “Break in” period?

I have no idea.

I can say with personal experience I've run into and not run into break in periods with different components. Here are components I've heard break-in or extended warm up time:

• Mundorf MKP capacitors in speaker crossovers.
  
• IcePower Class D amp modules
  

Here's one I haven't:  Luxman integrated.


The interesting thing is that a number of independent audiophiles have confirmed to also have the weird, very long Class D warm up times. Why the Luxman does not.... I have no idea. Perhaps the high current at idle leads to faster stability of the active devices?



Best,
E

mijostyn

Many companies now put something in their manuals like, "don't worry if it sound like crap. It takes three months for it to break in." When people don't know why they make stuff up. The Greeks made up Zeus.

It looks like you're making up a few things yourself.

Certain mechanical devices like cartridges and speakers do indeed have break in periods.

Correct

The manufacturers have to remain politically correct or people won't by their equipment.

Also correct

Audioquest believes there is a break-in period that applies to the AQ Niagara 1200.  From their owner's manual:

Though every attempt has been made to reduce the necessity of so-called “break-in,” “burn-in,” or “run-in” time—including high-power run-in of every critical capacitor in the Linear Noise-Dissipation Circuits—the Niagara 1200 will benefit from continuous use, just like any other audio/video component. This is not to say that you will be made to “suffer” through weeks or months of intolerable performance until that “magic day” when the parts are fully formed and ready. On the contrary, the Niagara 1200 will perform very well from the first moment you use it. It will improve gradually, in small increments, over a period of approximately two weeks. While leaving the Niagara 1200 turned on during this period will aid the process, it is also perfectly acceptable to turn the unit off; doing so will simply increase the time it takes to reach final “break-in.”