Bartolini 4.5 2-Pickup 4-Knob 2-Band Vol - Bl - Treb - Bass



  • 2-Band: 2-Pickup, 4-Knob
  • Vol - Bl - Treb - Bass

Will this work in your Bass?

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Control Configuration

  1. Volume
  2. Blend
  3. Treble
  4. Bass


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 4.5 2-Pickup 4-Knob 2-Band Vol - Bl - Treb - Bas?

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
2nd one!
By Allan
I replaced an Ibanez preamp with one of these. Great bass but mediocre electronics. I already installed one these on a custom build so I'm aware of the quality. This time I tried the prewired, much easier!
Bought the bass alive, very happy. Also they shipped it much quicker than they say.

Verified Buyer
Works great
By Joe Pohutsky
Used this as a replacement for my Warwick Corvette's blown EQ. Tone is better then before and installation was fairly quick.
Verified Buyer
Beautiful tone!
By Devin Harry Paul
Most excellent bass preamp! Best 2 band eq i've ever used. The treble does have a little noise at the top but slightly rolled off it's just fine!

I was able to dial up a tone i've been looking for in other bass controls for years in a couple seconds.

Very impressed!