I don't know if anybody already posted this. You can go to their You Tube site and view several vids.
"We recreated a Pink Floyd Live in Pompeii PA Rig with Chris Hewitt of CH Vintage Audio to celebrate the 50th anniversary of the original recording date in 1971. Stephen McElroy and Friends came down to play some songs through it! This is ‘Set the Controls for the Heart of the Sun’ "
Interesting You Tube group, they got some of the original pieces of Pink Floyd's classic set or their simulacrums for their tribute band, held in an open field with scant audience, but sounds pretty good.
Of course, Pink Floyd had a lot of their equipment stolen in New Orleans in 1970, so it might be the tribute band had their replacement rig used at Pompeii.
:"Some of the equipment stolen included 4 guitars (amongst them David Gilmour’s original Black Strat which he had purchased just a few weeks previously from Manny’s in New York) an electric organ, a 4000 watt sound system, including 12 speaker cabinets, 5 Italian echo units, a bunch of microphones, two drum kits and miles of cables".: