[cleantone]

Just want to chime in to say that you can really screw up phase relationships and aural quality by over doing a stereo expansion. The mix might have been in stereo with not too much panned out. At concerts a lot of time the FOH engineer doesn't pan instruments out at all. This is so equal volumes comes out of each stack for all channels. So going to tape is can sound more mono. It is pretty common to keep all but the tom drums centered.