the up-front sound, which I guess could be accomplished by getting close to the speakers (getting close to the speakers in a 50000 seat stadium and not being on the floor kinda puzzles me, but oh well..) or maybe with hypers, not sure...?
also the clarity and resolution sounds better than something you'd get from $300 mics, so...
just out of curiosity, how much would one have to pay to attain that?