I read in an old Guitar world that the main reason his tone was like that was because of his speakers/cab. He said he himself was never able to reproduce that exact tone after he switched speakers/cabs.
yeah. Not sure what he was using studio wise, but an educated guess would be either a 66-67 Marshall JTM 45 (50 watt) or a JTM100 head, and 4x12 from the same period (doubt he was using a full stack in a studio situation, but who knows). 25 watt celestions, (Or possibly Goodmans. Some early Marshalls had Goodmans) if it was stock. If he were using a bottom cab, it woulda been one of the tall straight cabs like he & Hendrix were using around that time. I dont think they started making the standard sized ones (same dimensions as a 1960B) until '68 or '69.
I think they were probably an "ingredient", but the basic set up (muddy guitar into a wah in the treble position) seems to do its own thing. My hermaphrodited Marshall plexi (basically a phucked up mix of a 67 superbass, a late 6o's / early 70's JMP Superlead with some 80's JCM 800 stuff goin on, and a few odd mods) ...ran into a tall (4 inches taller than a standard 1960B) with 90 watt Mesa Black Shadows nails it..(as far as amp & cab ).
The only thing remotely close that I have, thats similar to what he was using is the head (which is severly bass heavy, for being a Marshall. It's got bottom end that would make Alexis Texas jealous) and maybe my wah. I'd like to try a real clyde mccoy 60's vox wah next to my King Vox Wah. An EMG 81 & 85 equipped guitar is no where near the sound of whatever gibson (likely stock) he probably used. WAY hotter signal (though I dont run my volume knob wide open..unless playing lead stuff. It NORMALLY stays parked at about 3/4. For cleanish stuff, i roll mine down about half way, then up just a hair til I hit the sweet spot (and that depends on which head Im using, and what pedals are raping the front end).
sorry for the geek post