The Allman Brothers final concert was on Tuesday. They have aired the full show on Sirius/XM a few times since then. The sound quality is really good and there are excellent takes on many of their classics. They are in the conversation for greatest band of all time amongst the voices in my head. Wish I could've heard them back in the day.
I once heard a big music fan from the boomer generation say that his favorite 3 concerts of all time were The Allman Brothers. I think all three were there and they played until dawn at least once. That's getting your money's worth.
Duane was already dead when I saw them in the 70's, but they were still a good band. Not the same, though.