Give your bass a new voice with a custom Bartolini on-board preamp. These harnesses are prewired for easy installation and offer a variety of configurations to meet your needs. Bartolini is one of the most respected & trusted pickups & electronics builders in the industry and offers some of the finest electronics using only the highest-grade materials. Every Bartolini preamp & pickup is hand-built right here in the USA. All preamps feature a Gain trim pot on the module for fine-tuning, and all tone & blend pots feature smooth action & center indents. Preamp kits with concentric (stacked) control pots ship with 1 set of black plastic stacked knobs per concentric pot for your convenience. Other knobs are not included. Pots have 6mm knurled split shafts. Controls knobs with set screws are recommended. Controls are: – Volume with Push/Pull switch for Active/Passive modes – Pickup Blend – Bass/Treble Concentric (Stacked) Boost/Cut – Mid Boost/Cut with Push/Pull for frequency selection (switch between hi-mid & low-mid) What’s in the box: (1) Pre-wired Preamp Harness (1) Extra Battery Connector for 18 Volt installations (requires soldering if used) (1) Set of Black plastic knobs for concentric pot (1) Wiring Diagram PLEASE NOTE: Preamps that have been installed or attempted to be installed are not returnable unless defective. Check to make sure you have the correct preamp & check the fitment before attempting to install it.

Product Features

  • Can be wired for 9 or 18 volt configuration
  • 3-Band EQ w/ 4 Control Knobs
  • Fits most basses with 4 holes for control knobs
  • Active/Passive Switchable via Push/Pull Volume Control
  • Prewired for easy installation