Dopro Pre wired 3 Band Active & Passive EQ Equalizer Electric Bass Preamp Circuit

Volume B50K;Pickup MN250K Bass: +/- 10dB 30Hz B50K;Treble: +/- 10dB at 6KHz B50K P1 should be wired with neck pickup positive; P2 should be wired with bridge pickup positive; GND should be wired with two pickups negative High quality bass preamp, not inferior bass Circuit Please consult your local luthiers if you don't know how to install the Circuit;Package Include;Bass Preamp Circuitx 1