This is just the Marshall boosted with the dist+ into the Palmer into the GT-10 (just "plate" reverb, no modelled amps in other channels this time).
It sounds pretty bloody old school. You can hear the amp's tone pretty clearly as I try to keep up with Tony Iommi here:
[youtube]http://www.youtube.com/watch?v=F-n6c_dKK54[/youtube]
Haha, I think I got through the whole solo without chucking in a pinch harmonic
