Mike could very easily have set something up at CANJAM assuming he had sufficient access to the Schiit room well in advance. Three Yggys, labelled A, B and C. One powered on for at least 48 hours, one just 8 hours before they let the mob through the doors (by my calculations, that will be happening as I type this) and
one that he only powers on when prot or another skeptic asks to hear the DAC. Each audition would be accompanied by a tablet with columns for 'Date', 'Time', 'Attendee ID' and 'Rating', assuming CANJAM allocates some form of ID to every paying attendee.
The kicker is that the skeptics wont be able to hear 'DAC A' until the end of the meet, when they will be able to go back to a simple graph illustrating their opinion of the 'on-again, off-again' Yggy. If purrin is right, there should be some red faces and Mike's wont be one of them - of course, all three Yggys would have roughly the same number of hours on them. Alternatively, Schiit could simply update their FAQ and explicitly state that they believe that leaving gear turned on is advisable for those wanting to get the best from their DACs. My guess is that any Yggy at CANJAM will be in such heavy demand that reserving one simply for the skeptics would evoke howls of protest from those who are prepared to accept that some gear needs to be left on to sound its best. Will certainly make for some very interesting CANJAM impressions assuming Mike didnt have access to the room 48 hours ago