At the beginning of the song, with a very clean tone, you can see that the gain knob is very high. Strange.
While he's playing the second part (with much more distortion), nothing changes in the KPA (same gain level, same stomps). Strange.
Sorry for what I wrote before. A friend of mine told me that it is possible in some cases to obtain clean and lead sounds using the same rig just moving the guitar volume knob.
I didn't know that.