"Great Sound" must be taken in context...
This is a very good performance and one definitely worth hearing for fans of this group and those who are frustrated at the relatively sparse number of good live recordings.
That said, listeners should expect "A little better than 3 stars" sound, rather than "Not quite 5 stars." There is no mistaking this for anything but an audience recording, however valiantly it's been cleaned up. For me, it's a worthy historic artifact that's worth hearing, rather than something I imagine putting on because I want to hear it again and again...but again, that's because of the sound, not the performance.
Thanks to the powers that be for making it available!