Anything to do with these thingies?

[JimRayden]

They're called Dual Gate MOSFETs. 4-pin beasts. Any stompbox use for the second gate?

----------
Jimbo

[octafish]

I remember seeing a schem for the walco chord sustainer that had two gates on a mosfet. Found it. Second gate was just tied to ground, the part No. was 3KS30 (B). It was posted in the forum a while back. People had a lot of trouble with noise though, maybe the dual gate mosfet is the magic bullet?