JJ or compasspnt please do an overhead drums recording as it is the easiest way to hear the difference.
Yes,I heard a difference on JJ's sound files, especially the drums.
with the guitar, being an artificial and distorted sound to begin with, it's difficult to determine what is obviously 'cleaner' one way or another, but there is a noteable difference between the two...
What you need to listen to is the initial attack of the drums and the decay in the bottom end, as well as the general air around the sound.
the AMI transformer beat the shure..
regarding the older shure mic..as with all circuit improvements, there is MORE of a difference when the sound source is better to begin with (has more reality-information to it) so that would imply that the AMI transformer is letting the sound through, unless the old shure transformer is worse than the new..