Here is the link for those who lack the patience to dig around searching forever....https://www.dagogo.com/doug-schroeders-audiophile-law-6-thou-shalt-not-overemphasize-burn-in/
After reading the article. my main criticism is they did this with just one component, a relatively low priced device. And that they assumed the not broken in device was not broken in. they admit it had some time already on it) So any extrapolation to the world of all devices is a stretch. But a nice attempt.
ANd to say thee re variations in components. Some change a lot some not at all. So again one test does not offer enough to draw conclusions about all components.
As I have mentioned before. in particular cables, I have noted terrible sound from a Kimber Hero 7m XL at first use. (so much so I decided to return it, no question) but then after several hours it became less objectionable, and the next day was decent... So much so I reversed my decision to return it. The 'proof' it was not just getting used to it, as later on when I replaced the Hero with a 7m Parsec, which over a month failed to impress, Ad the dealer was repeatedly claiming just wait, let it break in.(so in effect proving I did not "just get used to" the previous Kimber over a few days.)
After reading the article. my main criticism is they did this with just one component, a relatively low priced device. And that they assumed the not broken in device was not broken in. they admit it had some time already on it) So any extrapolation to the world of all devices is a stretch. But a nice attempt.
ANd to say thee re variations in components. Some change a lot some not at all. So again one test does not offer enough to draw conclusions about all components.
As I have mentioned before. in particular cables, I have noted terrible sound from a Kimber Hero 7m XL at first use. (so much so I decided to return it, no question) but then after several hours it became less objectionable, and the next day was decent... So much so I reversed my decision to return it. The 'proof' it was not just getting used to it, as later on when I replaced the Hero with a 7m Parsec, which over a month failed to impress, Ad the dealer was repeatedly claiming just wait, let it break in.(so in effect proving I did not "just get used to" the previous Kimber over a few days.)

