Pretty sure it was latte 90's early 2000's...have wasted many brain cells since then, as usual it is only the venue..boondal that lets any show down there a touch, not the best accoustics going around. I have seen so many bands there over the years and they all suffer from the same restrictions of the venue.
Mind you a good audio engineer can get around it..Pink Floyd managed to pull a killer sound there during the delicate sound of thunder tour.
I haven't done a bdo in over 20 yrs...went to the first one though, as well as the first livid festival.
festivals are the same as corp greed for mine...gimmee a pub show anyday.