Hey Dave, I'm amazed my post even got through the approval :)
Cable burn-in is a touchy subject, so it is best not to state it as a "Known fact". I would probably rephrase it in a more neutral manner.
That being said, if I believed in cable burn-in, I wouldn't pay a dime for the cable manufacturer to burn them in. I would think that, if they felt it makes the cable sound better, they would burn-in their cables as a matter of course. Some manufacturers do.
Cable burn-in is a touchy subject, so it is best not to state it as a "Known fact". I would probably rephrase it in a more neutral manner.
That being said, if I believed in cable burn-in, I wouldn't pay a dime for the cable manufacturer to burn them in. I would think that, if they felt it makes the cable sound better, they would burn-in their cables as a matter of course. Some manufacturers do.