I remember reading an interview with Angus in 'Guitar World" magazine years ago, where he said they (him and Malcolm) each had SIX 100 watt marshall heads hooked up! Now just ONE of those thing cranked can near blow your head off!!

My niece and her boyfriend saw them in Sydney, came back with heaps of pics for me, and some video footage on their digital camera, though the sound isnt great you get an idea how loud they must've been.