So, when I was ordering some J and P pups from Mr Villex he told me about some new products he has. "We have new product - output booster. It acts as if you have overwound pickups. Very efficient!!! We made only couple dozens yet but response already super +. Can be 2 way (original + extra hot) or 3 way (orig. + hot + extra hot). Second one comes with 3 position rotary switch and first one with toggle switch. I am sure you must try" Well, he was right on the last part I ordered one of each So I got my pickup order last night, and these two very interesting looking contraptions were in there. My Geddy Lee Jazz is probably the best candidate for trying these out. Since they just sit in the signal chain, looks like they can be used with any pickups.