Watch the Angus Young online guitar lesson by Jeff McErlain from Kings of Tone
It doesn't get much simpler than Angus' setup, guitar-cable-amp. That's about it. So how does he get all those great sounds? He plays the guitar. What do I mean by that? He is a touch player, his nuances come from how hard he picks, where he picks, his volume and tone knobs. I agree that AC/DC is not the most subtle band out there, nor are they trying to be, but Angus' playing can be very subtle.