Spartanbass

Yes, from what I can make out they all do. The potentiometer for the treble control is a dual gang. One half working the active treble boost and cut and the othe half working as a simple tone control in passive mode. The image is not from my bass, just one I found online. I am making the asumption they would all be the same.

Hi just wondering if you had any luck finding a preamp for your Precision Special? I'm also in need of one for my 1982 Special. I have managed to find a schematic for the circuit but some of the component values are hard to read.