I actually have to wonder about the 100 hours of break-in from the factory and here is why:
I ordered an Ares 15 and from the time of the order to the time it was at my front door was six days....six days. Now either Denafrips has a fair amount of Ares 15 DACs already built and getting broken in / already broken in and ready to ship, or the 100 hours is more a sales pitch for if my unit was to be assembled as I was led to believe, well, 100 hours is a little more than four days so that would mean my Ares 15 would make it from China, through Customs and to my front door in two days. That is impressive. So I am going with the thought that the 100 hours is not accurate at all and I am getting a unit that is cold and will need a lot of time on it.
Just in case anyone is still wondering about the break-in period...