It is a different re-mastered version supervised by Michael Bay himself. Every minor detail stands out with precision on this transfer. This is a reference quality audio soundtrack as well. One of the top five sounding discs that I have heard, if not the one to beat. The bass is deep and powerful.
Every speaker is used and used to perfection.
I can't say enough about this soundtrack. From Space Shuttles flying over your head to machine guns blasting things to dialogue sounding crystal clear. If you want your friends to watch one movie on DVD at your house it should be Armageddon or Air Force One. Two great movies with great pictures and awesome sound. This is where the Criterion version out does the regular version by leaps and bounds.