I'm a Dave Matthews Band fan and I have both CD and DVD versions of his 2003 Central Park Concert. The DVD offers 5.1 and PCM stereo audio options. I'd always listened/watched the DVD using 5.1 surround but recently gave the PCM stereo a shot. It is terrific! When I'm seated in the sweet spot it has great stereo imaging and to me sounds better than 5.1. Well, this got me to wondering if the PCM stereo on the DVD sounded different than the CD version. I turned off the TV and just listened to both (at the same volume) and I preferred the DVD's PCM stereo to the CD version. In particular the bass and higher frequencies (12-string guitar) sounded better.

OK, now the question. Assuming the discs are mixed the same are there any technical reasons for the apparent differences between the PCM stereo on the DVD and the CD? Or am I just imagining things?