New FET distortion schematic...sensation?

[Zapp Brannigan]

                    Possibly dual-gate mosfets - the only thing I've seen with 4 pins in a metal case . Worth a shot.

Nope, the 4th V's (КП303...) leg (actually it is th 1st from the mark cw) is ground contact, reduces noise. КП303 are n-channel Jfets, not mosfets.

[DDD]

By the by, I use BF512 FETs instead of the Russian КП303В successfully.
BF512 are very good FETs, low-noise and tolerant to static electricity, etc, etc.

[loss1234]

Does anyone still have copies of the 4 fet schematics ?

This all sounds so interesting but the links are dead