This is the head that was used during Pantera's Cowboys from Hell/Vulgar Display of Power era. In my opinion this was the apogee of Dimebag's recorded tone.

It's as solid-state as they get, and it only does one thing, but it does that one thing WELL. Actually, it doesn't even do THAT very well...it sounds just awful, really. There's a little trick to geting that Dimebag crunch out of it.

No, I won't tell you what it is. But I will tell you that the green vinyl makes it Rökk at least 50% harder.