I do not think it is a Jfet. I think it is either a PNP, or MOSFET. Because, looking at the number one leg looks to be going to ground. On a PNP transistor this would be the emitter leg, and on a MOSFET this would be the source leg. On the J201 this would be the drain leg, and I am not good with designs but have not seen a J201 with the drain to ground. I found a better picture of the inside, and have attached. Love the sound of this and would love to see a schematic.
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