Bartolini 3.3AP 2-Pickup 3-Knob 2-Band Vol P/P A/P - Bl - Treb/Bass Stack



  • 2-Band: 2-Pickup, 3-Knob
  • VPP A/P - Bl - Treb/Bass Stack

Will this work in your Bass?

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Control Configuration

  1. Volume (w/Active-Passive Push-Pull)
  2. Blend
  3. Treble/Bass stack


A Pre-Wired harness saves the time and aggravation of wiring your pre-amp and pots into your instrument. They feature our industry leading pre-amps and premium audio-quality potentiometers with smooth control and ready for years of rugged use.

Bartolini preamps offer many popular configurations available for many control layouts. Tonally the Bartolini preamps are comparitively punchy in the low, low midrange, and midrange. The top end is 'note' bright. These units contain gain control which allows the user to set the signal to output level via a small trimpot on the module.

These preamps are not recommended for fitment in top routed Fender style instruments with the control cavity on the top. Intended to be used with an instrument with a rear control cavity.

*Modification Needed:

Bartolini preamps are built compatible for use with passive pickups such as Bartolini, Aguilar, Nordstrand, Delano, and other passive pickup manufacturers. If using active pickups preamp passive stage of Volume and Blend will need to use 25k pots. A single 9v battery is sufficient to power both active pickups and a Bartolini preamp simultaneously, but we recommend 2 9v wired for 18v if there is enough room inside the bass

Technical Specifications

  • Bass: +/-14db @ 30 HZ
  • Treble: +/-16db @ 10 KHz

Question: Where Can I Buy a Bartolini 3.3AP 2-Pickup 3-Knob 2-Band Vol P/P A/P - Bl - Treb/Bass Stack?

Answer: You can buy this from Best Bass Gear by Calling 877-839-3531 or Emailing us at or chatting with our Bass Techs


Rate and Review this item
Verified Buyer
Very good preamp
By Christian
I purchased this preamp harness to replace the old preamp in my Tune Bass. it was very easy to set up and it sounds great. I would definitely recommend this.
Verified Buyer
Replaced preamp and pickups
By John Tinsley
Replaced the Seymour Duncan soapbar pickups and preamp with the 2 band Bartolini preamp with an active passive pull up volume and two Bartolini P2 size pickups in a home made bass. They are a much better match for the instrument and are not as shrill as the S-D's. Will use this set up again.
Verified Buyer
squier 70's jazzbass
By stijn deldaele
i have a squier jazzbass 70's reissue with a maple fingerboard. I had already installed seymour duncan hot stack pick-ups and now i have installed the 3.3 bartolini pre-amp. It's a perfect match! the bass sounds really snappy, bright but with a good bottom low in it. The pre wiring of the pre-amp was excellent. Just soldering the pick-up wires to the blend knob and connecting the shield wires and off we went! Really easy to install! Top proffesional pre-amp
Verified Buyer
Bartolini 3.3AP Preamp
By Sonny
I had this preamp installed in my RBass and now I have the best of active and passive options.....great buy!
Verified Buyer
A must Have for your Barts !!!
By Kevin
Got this preamp to replace an aging one in my zon sonus 5 ... went from a 2 band 9volt to a 3 band, vari-mid 18volt... Its night and day !!! awesome sound !!! great control !!! huge amounts of headroom !!!