Sadowsky Onboard Bass Preamp F Style

Sadowsky Onboard Bass Preamp F-Style, Pre-wired Onboard Bass Preamp for MetroExpress, For electric basses with four-knob layout, side socket and battery compartment, Active preamp for passive pickups, Four-knob layout with control options for master volume / balance / vintage tone control (P/P) / treble and bass (stacked), Push/pull function on the VTC control for preamp bypass, Longer cables between the potentiometers to ensure installation in basses other than Sadowsky basses, Screw terminals on the balance potentiometer for solder-free installation of the pickups' hot & ground cables, Without control plate, Frequency range: 5 - 50,000 Hz, Bass control offers +18 dB boost at 40 Hz, Treble control offers +18 dB boost at 4 kHz, Total harmonic distortion (THD) 0.18% at 1 kHz, Power supply with a 9V battery, Current consumption 9 mA, Up to 870 hours of battery life, 1 MOhm input impedance, Output impedance 1 kOhm@+*Note:* When installing a Sadowsky onboard preamp in a MetroExpress bass without a control plate (Modern, Verdine White and M/J models), the holes in the body for the potentiometers must be enlarged. This is due to the fact that the factory-fitted potentiometers of the MetroExpress have a smaller diameter than the potentiometers of the Sadowsky Onboard Preamp