Huh? Select mic as the input? The input is the UX2 isn't it? There's no place in preferences that lets me select microphone. I too have no sound when plugging in my SM57 into either mic input. There is no other cable plugged in to the UX2, just the mic cord, and still nothing. Tried different cables, and still no luck. The 1/4" guitar input works when plugged into my guitar, so I know that part of the interface works. Any help would be appreciated.