Hate to tell you, but it's mostly in his fingers. Jeff's gear, amps and pedlas have always been kept very basic and most of the unique and wonderful tones he gets come from a combination of his fingerpicking and very clever use of the vibrato bar and the pickup selector switch. The Blow By Blow LP was recorded right when he started mostly using his fingers rather than a pick, so even for him some of the sounds and style were a bit of luck.
Yes, I know everything. No, I can't play worth a damn.
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Yep, thats just picking dynamics with his fingers
"I've Been Imitated So Well I've Heard People Copy My Mistakes"- Jimi Hendrix

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