...the term as it is currently used(or abused, to be more accurate) is a misnomer...

"burn-in" is a process which measures the time required for the unit under test to fail...not improve!

I would avoid any component that requires a break-in (appropriate term) period...hook it up, plug it in and go!!! If it's gonna' fail, make it do so within the first few days, as this will give you grounds for replacement(as opposed to repairs) if required...

SS components reach operational stability in a very short time...tubes longer(unless left in a "stand-by mode)...things that require any period longer than that are probably in the process breaking down...speakers should be good to go right outta' the box.

The myth of "burn-in" just goes along with all the other dubious "audiophile" claptrap. Besides, how would running your system on interstation noise, white noise, pink noise or any other non-musical source reveal any real flaws? Answer: it won't!

As Debbi wrote...what happens after we have reached the plateau of "burn-in" nirvana...does it continue to improve? Reach stasis? Start to cr@p-out?

Audie