I finally had the opportunity to run a direct comparison of modded vs unmodded a couple weeks back (I've had both sets of bodies for a while, but never had 4 identical caps before until picking up a 2nd pair of CK1's recently)
So... here are the details:
Both mic pairs are using CK1 caps (w/ adapter rings), Mogami XLRs, and going into an Oade Concert Mod R-44
Config is 25cm at 90 degrees
DFC, ~16 ft from stage, ~9ft high, one pair mounted ~16 inches in front of the other
8 files total (Four 2-minute clips, somewhat randomly picked, 2 from the 1st set and 2 from the 2nd)
Recorded at 44.1/24-bit, FLACs are the same
Levels matched to within 0.5 dB or so RMS in Sound Forge 9, and 1/2 second fades added (No EQ or any other edits)
http://soundcloud.com/talanwright/sets/2012-05-25-akg460-comp/ NOTE: SoundCloud encodes MP3 at 128kbps, so just listening to the stream is not going to be a good representation... Please download the 24-bit FLACs
Oh - the show is Steve Kimock at the Ritz Ybor in Tampa 5/25
EDIT: added some more detail (lineage, etc)