|With the Sony SACD players, its been widely reported in both print and at audio asylum that these machines seem to require 300 hours burn-in to sound their best
Yes, you have to use up 1/4 of the lifespan of the laser before it works properly. Same as cables, they need 4000 hours of signal passing through them before the cable realizes it's doing a good job and smiles for you. And don't forget your component stand. The equipment must sit on that stand for at least 50,000 hours before the stand begins to sound right. If you take it apart and rebuilt it 10 times, you will only require 1000 hours to burn it in. And you have to make sure it's a leap year, otherwise it's another four years until you can hear your components properly. Even those green making pens (for edges of CD's) need break-in. You have to make about 400 "COMPONENTS ON STRIKE!" placards before the chemicals in the ink cure properly
I found the same thing with light bulbs. It was only after 1000 hours that the light being emitted was of quality enough for me to properly see where I was going. My toaster? Needed 4000 pieces of bread through it before it tasted right. Not to mention my new floors. I had to walk over them for months on end before I even realized I was in my own house.
Then my wife told me to just close my eyes and everything was fine.