Bartolini HR-4.6AP/918 Preamp Harness - 3-Band EQ w/ 4 Control Knobs - Active/Passive Switchable - Pre-wired for a Two-Pickup Installation
- Can be wired for 9 or 18 volt configuration.
- Fits most basses with 4 holes for control knobs.
- Active/Passive Switchable via Push/Pull Volume Control.