Rawer and louder than the law allows. On Let There Be Rock, Angus drove a late-'60s Gibson SG Standard into a cranked 100-watt Marshall JMP Super Lead with Celestion Greenbacks — and famously kept playing as the amp literally smoked during the solo. Producers Harry Vanda and George Young tracked it nearly live at Albert Studios, Sydney, with minimal overdubs and none of the later studio gloss. No pedals, standard tuning; the grit is all amp and right hand.