The question remains why don’t manufacturers bed, burn, or break in their products as part of their provision. This should be especially true when it comes to products commanding 5 or 6 figure price tags.
I said it before in so many words, "they are" and adjusted to specification at operational temperature at the factory.
If they "burnt in" anymore after weeks and months, all the adjustments made would drift also that were made at the factory, and it would then be out of spec, and sound worse
The manufacturers don’t say for you to bring the device back for re-calibration after it’s "burnt it" do they?
Speaker drivers are the exception, as they are mechanical and do change "burn in" from new.
Cheers George