brge,
I have asked Ted Smith, on a few occasions, about this issue of sounding better after powering off and on thus reinitializing the dac and he claims it to be perfectly normal not unlike “degaussing” or “demagnetizing” the dac. Ted has said that I am not alone and that there’s no problem with my particular dac. He said that some owners of both the Mk1 and Mk2 notice this phenomenon. It’s not as though the sound goes bad but it can just sound better with occasional reboots.