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Bartolini 5.4AP (NOT AVAILABLE)



  • 3-Band: 2-Pickup, 5-Knob, 1-Switch
  • VPP A/P - Bl - Treb - Mid - Bass - Mid Switch



Control Configuration

  1. Volume (with Active/Passive push-pull)
  2. Blend
  3. Treble
  4. Mid
  5. Bass
  6. Mid Frequency Selector Switch

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
  • Midrange: +/-10db @ 250, 500, 800 Hz. *Note: Mid P/P has 250 & 800Hz selections, Mid switch allows all three frequencies.
  • Treble: +/-16db @ 10 KHz


Rate and Review this item
Verified Buyer
Awesome preamp
By Dave Meadowcroft from on 1/3/2014
I bought this to replace the stock MK1 pre in my Cort A6. Now my highs are clear and crisp instead of brittle and harsh and the lows are defined and not mud.

The control over the midrange, especially at 250Hz, makes it worth buying alone!

I later changed the pickups too (to a MK6CBC set also from Best Bass Gear) which along with the pre has changed my bass from a good to a great instrument.
Verified Buyer
Outstanding Preamp
By Pro Bassist from on 1/3/2014
Bartolini has always made the best preamps. I put this one in my Ibanez SR 706, its a much better sounding pre, very quiet ! I'm very happy and glad I mad the decision to upgrade !, Next I will be adding a set of Ken Smith soapbars to complete the sound I want !
Verified Buyer
By Orlando from on 1/3/2014
If you want quiet clean tone this is the preamp for you, great sound .
Verified Buyer
Electronics Engineer (and ex pro musician, now playing for fun)
By Pete Dunn from on 1/3/2014
As the old lyric say: 'Simply the Best".
I now have 4 bass guitars with Bartolini preamps retro-fitted; a 4 & a 5 string with EMG DC40s; a 5 string with Delano single coils and a 6 string with Bartolini humbuckers. The sound with this preamp and the active DC40s (change the blend pot to a 25K) is nothing short of awesome. Keep up the good work B.B.G. Pete
Verified Buyer
Bass player
By Michael White from on 1/3/2014
I truly am enjoying the Bartolini preamp, strings and selection sw. I purchases from you guys. Being a working musician, finding parts for my 19yr old modulus graphite bass in one location is a great benefit to me. I will continue to buy my supplies from you. Thank you for responding to my letter of concern with the shipping issue.