Break-in factor rqd for new cd player?

Anyone know if there is a 'break-in' period rqd for a new CD player to sound its best?

I just purchased a new CD player- the excellent Audio Aero Capitole 24/192, and my initial impressions (only the first hour of play) are that it does not seem to be giving me quite the same performance of the floor model (well broken in) that I initially borrowed. Of course there are always contributing factors- i.e. dirty power in the middle of the day from the lines as opposed to later at night, when I was doing most of the testing of the floor model; switching power cords and interconnects may be a factor as well- do they need to 'settle down' after being moved?

Anyone with any impressions on this? will it improve over time, or should it be performing as well as possible right out of the box- i.e. is there a 'break-in' factor with digital? I should note that this player does has a subminiature tube output stage, which my previous player- Sim Audio Eclipse, did not (although I don't know if this would affect anything or not...).

Thanks!

Sutts