He also liked to use a Mtchless DC30....in fact he was know to use several amps of different makes at the same time. This is something that a lot of guys use to great effect. Eric Johnson comes to mind.

Keith Richards is another example of a guy that used multi amp setups. One dirty and one clean.

That's why some of their tones are almost impossible to recreate on a single amp.

More than anything it comes from the heart and out through the hands.