I think Goldsparkletop is right with regards to some of those tones, JCM 800. But the JMD:1 preamp 6 (JCM 800), though it can be awesome, doesn't have the gain to match the Green Day tone. Preamp 12 (Detuned, Mode 4), is the opposite side of spectrum: shit tons of gain. I think Preamp 10 (JVM) is th...