Looking at the amp, it looks like it's dialled in to:
Vol 1 - 6.5
Vol 2 - 6
Master - 6
Treble - 6.5
Bass - 4
Mids - 5.75
I also found a picture of his backup amp in his live rack and it had this dialled in,
Vol 1 - 9 (just a hair below)
Vol 2 - 9 (just a hair above)
Master - 4.5
Treble - 6.5
Bass - 3.5
Mids - 5.7