SEYMOUR DUNCAN Bass Preamp Circuit STC-3M4 Music Man Active Preamp - 3band 4 Knobs

■Bass preamp circuit ■4 knob specification ※Wiring manual http://www.seymourduncan.com/images/products/basslines/501040-110.pdf Product images include usage images. Please note that anything other than what is specified in the is not included.