Watch the Duane Allman online guitar lesson by Jeff McErlain from Kings of Tone
Duane's setup is very simple and classic, a Les Paul or SG into a cranked 50 watt Marshall Plexi with a 4x12 Marshall cabinet loaded with JBL speakers. I really love the simplicity of this kind of set up, the tone is so pure and immediate and touch sensitive. Now of course, everyone could get away with playing much louder in those days. So if you really want that vintage sound of a cranked amp look for a lower wattage amp. They may not sound as huge but they are close. For Duane style tones the Marshall 20 watt 2061x is a great choice. But it's still LOUD!