Component Break In. Truth or Fantasy


I just recently got a second pair of planar headphones and the manual suggests a break in period of 150 hours. I find the topic of component break interesting in that, like so many things today, opinions are polarized with some audiophiles claiming break in having significant effects while other maintaining it is all BS and it's just you getting used to the new sound of your component.

My experiences has been that break in has a significant effect on components that convert one form of energy into another, and that have a mechanical aspect to them.

It makes sense that new speakers, as a result of excursions when being played, will loosen up and that will affect the sound. Same goes for phono cartridge suspensions. It's not unlike our own bodies where stiffness reduces and movement range extends when we work out, move, or stretch.

However, I have not found significant break in effects with all electronic components like DACs and Solid State Amps. And as for cables, not at all.

What has been your experience?

alvinnir2

Personally I call it settling time and it's mostly caps in electronic and speakers that needs to settle or stabilise.. same goes for tubes. All suspension in all kinds of speakers tend to loosen up after some usage aswell. 

@roadcykler 

It hasn't been my experience that break in always results in components or cables always sounding better-- merely that they reach a point of stabilization beyond which the sound stops changing. In fact, I've experienced components that sounded better at first, then changed in ways I did not care for. These items ended up being returned.

Science knows how to answer this question. Conduct a controlled experiment. The experiment would consist of evaluating two components and having a large sample of people listen to them when both are new. Then break one of the components in for 100 or 200 hours and have the same group of people listened to both components again if break-in is real, a significant portion of the people will identify the broken end component correctly.