These are EMG 40DC Pickups out of a Roscoe LG2005 5 string bass. I bought the preamp to replace the passive tone control buy ended up with a different combination in the bass. It is a 4 knob 3 band version, it is wired for 9VDC but can easily be switched to 18VDC by adding a second battery and connections. Click here to read the pdf about the preamp from EMG's website. I would like to get $150 for the complete set. I prefer Postal Money Order but could take PayPal. At this time I am only shipping to the ConUS.