I have been playing around with it.. when I first tried it I had it running by itself and got all the crazy tones you can expect. After I put it back together, because the protection diode had cracked ( I have no idea how that happened ), I played it as part of the split/mixed board I built with the Pro-cessor kit.
The Pro-cessor is a buffered pedal and I was blending the fuzz factory with an acapulco gold, it sounded good but not crazy like the fuzz factory should. I thought I had done something wrong.
Well it turns out that the fuzz factory only goes crazy when there's a high impedance input like a guitar and not a buffered pedal, I'll get a Y splitter and route things differently.