Why hasn't anyone made a pedal that emulates SIR #39? As often as it gets asked on various forums about getting Slash's tone on AFD, it seems like it would be a good seller.
I've heard a Marshall Guv'nor comes close to the Appetite sound. A lot of it is Slash's technique as well. I've played a Caswell-modded Marshall, and (huge surprise) I sounded like me.