I think that it's part of the game we play. When I built my amps, I was expecting 5-700 hours to burn them in. It's been a great journey, noticing when a significant step has been achieved, sharing the almost blossoming of the system with my wife as we take the time to listen for a couple of hours each night. (and getting very competitive in cards...)
My system has yet to hit it's peak, I bought the speakers first, decided I needed better power, so within a month of purchasing the speakers, I added two tube mono blocks and a tube pre-amp. Also threw in dual subs within a few weeks of hooking up the amps. Pretty much the whole thing is burning in before my ears and it's pretty cool. Oh, yea, I have a bluesound vault that has also been burning in, and if a loki max needs burn in...all pretty much the same age.
My system does sound better each week, now, thinking of adding a phono stage and TT, also upgrading the bluesound, but will wait a while.