|"The history of the player is:|
24/192 (upgraded DAC)
24/192 UP (upgraded DAC plus various internal component upgrades).
The "SE" and "MKII" designations refer to the 24/192 UP and 24/192 players. Neither of these are actually official names given by Electrocompaniet. Someone (dealer or customer) referred to the EMC-1 players as "SE" and "MKII" some months back and the names just kinda' stuck."
The above from the horse's mouth, an authorized dealer. After having gone through hell selling my Dodson 217 MK II D, competing w/guys mistakenly advertising their units w/out mentioning they were upgraded and not the latest model, I'm a bit sensitive to mis-categorizations, no matter how innocent. (Anyone playing these games should be pilloried in front of an array of Bose speakers).