deadguise wrote:Maybe he was using an E-bow?
Not in 1974, he wasn't. The original E-bow was introduced at, I think, the 1977 NAMM convention. In fact, I recall an article in Guitar Player back in 1988 about the E-bow, where they said that Jerry and Bob bought I think they said three of them at that NAMM convention.
Besides which, the E-bow wouldn't account for what we're talking about. The E-bow gives you infinite sustain, but it doesn't really change the actual tone of the instrument.
In the examples I'm talking about, Jerry's using some kind of distortion effect. It's not amp distortion, you can't get that kind of tone from a tube amp. This is definitely some type of effect, either a pedal, or maybe an onboard preamp. I believe I read Jerry had an Alembic Stratoblaster preamp installed on some of his guitars, but I'm not sure if that could generate this kind of distortion.
But if he was using a Morley Fuzz/Wah, that might be the effect I'm talking about. I've never used that pedal, so I don't know what the fuzz sounds like on it. And if he only used that particular during the spring/summer tour dates, that would explain why you don't hear the effect on the British, French and German dates in September or the Winterland shows in October.