Earl00001 a blackface super reverb by the looks of things mate, sounds killer probably a pedal in there too cos those things are huge and I'd imaging too loud for a little gig as it's distorted a fair bit
And when the cable itself goes bad??? Is it then easier to change when it's wrapped around ten items to keep it in... or if it is just plugged in at both ends? I mean really, the guy isn't doing the Angus Young thing. I'd doubt he steps on his cable much while doing back flips and cartwheels.