ESR Graphic Fuzz

Gnarly, oscillating fuzz tone–this is a bit of a weird one. The original used both positive and negative 9v (which I have a hard time wrapping my head around). FSB forum member Induction altered the circuit to support standard power supplies, so no need for a 9v battery or adding a +/- converter. And it should sound very close to the original. Here's his schematic for reference. Should easily fit in a 1590a. There's also a fabricated version of this circuit in the store, the OSCillot.

Here's a demo of it against an IdiotBox Blasteroid: