I began experimenting with microphone emulation and got surprisingly bad results -- anyone else looked into this?
According to the GOS documents, GOS was recorded with "Bruel & Kjer 4006" microphones. They aren't in the gigastudio list, so I did a little trial and error.
Here is an mp3 of the result: chosen somewhat at random, in order, the M50, the M0438, M970, U47 and U87 selected as 'Original Mic', with 'Replacement Mic' as none. Medium hall, perspective at 175, default placements.