If you got some reasonable hot humbuckers Seymour Duncan JB or hotter for sure. I am pretty sure Foo Fighters used them (amongst other amps) on that double album, was it In Your Honour?, they did a few years ago.
There is heaps of gain, there is 2 gain stages plus a master plus you can also switch down to 5 watts which gives you even more gain. Whilst 30 watts gives a bigger sound generally, I find in the 5 watt mode you can scoop the sound more to get the chug.
Cheers
