probably going to be a few hundred hours of play time before i should comment on nc400 vs nc1200, my nc400 probably have a few hundred hours of usage already
my nc1200 probably hit a hour today, unsure of how much factory burn in it had
asides from my all my power cords, interconnects and speaker cables are newish, my AV123 LS6 speakers just got some upgrade parts earlier in the week as well, and my modwright oppo has as much burn in as Dan managed to put in before shipping.