Bartolini NTMB Preamps

Frankie - Bass Tech Will these Bartolini NTMB Preamps work with your Bass? Ask Frankie, our Bass Tech.

Bartolini NTMB preamps are among the best known onboard bass preamps. Many major manufacturers as well as most smaller custom builders have Bartolini preamps as an option for their instruments, and many use Bartolini preamps as their standard stock preamp for their basses.

The NTMB come prewired on a harness with gain control trim potentiometer to control overall output. This means that the preamp module comes wired up to the potentiometers, battery connectors and the output jack. In most cases, the only connections that will need to be made are connecting the pickup wires to the pots and ground. Depending on layout, you may need to extend a couple of the wires to reach to the jack.

Bartolini Preamps come prewired from the factory.

The NTMB are wired for 9 Volt operation, but an extra battery clip is included for 18 Volt operation.

**See the Bartolini FAQ section for information about knobs**

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  1. Bartolini 5.2AP NTMB-GFL (Fretless) Compact Preamp

    $192.00
    Bartolini 5.2 A/P NTMB-GFL (Fretless) Compact Preamp 2-Pickup 5-Knob 3-Band Vol P/P A/P - Bl - Treb - Mid P/P - Bass
    Bartolini 5.2AP NTMB-GFL (Fretless) Compact Preamp The NTMB+FL is designed to put more focus on the mid frequencies. As such, the bass control has less range than the NTMB+F ( +/-12dB @30Hz vs. +/-15dB @30Hz). Also the treble control has...
  2. Bartolini NTMB 5.4T-AP 2-Pickup 5-Knob 2-Switch 3-Band Vol - Bl - Treb - Mid - Bass - Mid sw - A/P

    $225.00
    Bartolini NTMB preamp
    Bartolini NTMB Control Configuration Master Volume Blend Treble Mid Bass Mid Frequency Selector Switch active/passive toggle A...
  3. Bartolini 5.2 GFL Compact Preamp 2-Pickup 5-Knob 3-Band Vol - Bl - Treb - Mid P/P - Bass

    $184.00
    Bartolini 5.2GFL Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control...
  4. Bartolini HR-4.6J/918 Pre-Wired Harness

    $188.00
    3 Band EQ, 4 Pots Jazz Layout: (Volume) (Blend) (Mid with 250/800Hz push-pull) (Treble/Bass Stack)
    Bartolini HR-4.6J/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide...
  5. Bartolini HR-4.7J/918 Pre-Wired Harness

    $208.00
    3 Band EQ, 4 Pots, 1 toggle Jazz Layout: (Volume) (Blend) (Mid) [250,500,800Hz Mid Toggle] (Treble/Bass Stack)
    Bartolini HR-4.7J/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide...
  6. Bartolini HR-2.5/918 Pre-Wired Harness

    $168.00
    3 Band EQ, 4 Pots: (Volume) (Treble) (Mid with 250/800Hz push-pull) (Bass)
    Bartolini HR-2.5/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide boost...
  7. Bartolini HR-4.4/918 Pre-Wired Harness

    $184.00
    3 Band EQ, 4 Pots: (Neck Volume) (Bridge Volume) (Mid with 250/800Hz push-pull) (Treble/Bass Stack)
    Bartolini HR-4.4/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide boost...
  8. Bartolini HR-4.4APJ/918 Pre-Wired Harness

    $196.00
    3 Band EQ, 4 Pots Jazz Layout: (Neck Volume with Pull-Bypass Switch) (Bridge Volume) (Mid with 250/800Hz push-pull) (Treble/Bass Stack)
    Bartolini HR-4.4APJ/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide...
  9. Bartolini HR-4.4J/918 Pre-Wired Harness

    $184.00
    3 Band EQ, 4 Pots Jazz Layout: (Neck Volume) (Bridge Volume) (Mid with 250/800Hz push-pull) (Treble/Bass Stack)
    Bartolini HR-4.4J/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide...
  10. Bartolini HR-5.0AP/918 Pre-Wired Harness

    $188.00
    3 Band EQ, 5 Pots: (Bass) (Mid) (Treble) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini HR-5.0AP/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide...
  11. Bartolini HR-5.0/918 Pre-Wired Harness

    $180.00
    3 Band EQ, 5 Pots: (Bass) (Mid) (Treble) (Blend) (Volume)
    Bartolini HR-5.0/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide boost...
  12. Bartolini HR-4.7APJ/918 Pre-Wired Harness

    $216.00
    3 Band EQ, 4 Pots, 1 toggle Jazz Layout: (Treble/Bass Stack) (Mid) (250,500,800Hz Mid Toggle) (Blend) (Volume)
    Bartolini HR-4.7APJ/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide...
  13. Bartolini HR-4.6APJ/918 Pre-Wired Harness

    $199.00
    3 Band EQ, 4 Pots Jazz Layout: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini HR-4.6APJ/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide...
  14. Bartolini HR-4.4/918 Pre-Wired Harness

    $184.00
    3 Band EQ, 4 Pots: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Neck Volume) (Bridge Volume)
    Bartolini HR-4.4/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide boost...
  15. Bartolini HR-2.4/918 Pre-Wired Harness

    $176.00
    3 Band EQ, 3 Pots: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Volume)
    Bartolini HR-2.4/918 Pre-Wired Harness Our most popular preamp for decades, the NTMB+F is a 3-band tone control preamp with fully independent Bass, Mid and Treble controls. It is well known to professionals for its very low noise and wide boost...
  16. Bartolini 5.3AP Compact Preamp 2-Pickup 5-Knob 1-Switch 3-Band Vol P/P A/P - Vol - Treb - Mid - Bass - Mid Sw

    $208.00
    Bartolini 5.3AP Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control...
  17. Bartolini 5.2 Compact Preamp 2-Pickup 5-Knob 3-Band Vol - Bl - Treb - Mid P/P - Bass

    $184.00
    Bartolini 5.2 Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control...
  18. Bartolini 4.7 Compact Preamp 2-Pickup 4-Knob 1-Switch 3-Band Vol - Bl - Mid - Treb/Bass Stack - Mid Sw

    $208.00
    Bartolini 4.7 Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control...
  19. Bartolini 4.7AP Compact Preamp 2-Pickup 4-Knob 1-Switch 3-Band Vol P/P A/P - Bl - Mid - Treb/Bass Stack - Mid Sw

    $216.00
    Bartolini 4.7AP Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control...
  20. Bartolini 4.6 Compact Preamp 2-Pickup 4-Knob 3-Band Vol - Bl - Mid P/P - Treb/Bass Stack

    $188.00
    Bartolini 4.6 Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control Configuration Volume Blend Mid...
  21. Bartolini 4.6AP Compact Preamp 2-Pickup 4-Knob 3-Band Vol P/P A/P - Bl - Mid P/P - Treb/Bass Stack

    $199.00
    Bartolini 4.6AP Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control...
  22. Bartolini 3.4 Compact Preamp 2-Pickup 3-Knob 3-Band Vol/Vol Stack - Mid P/P - Treb/Bass Stack

    $196.00
    Bartolini 3.4 Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control Configuration Volume/Volume...
  23. Bartolini 5.4 Compact Preamp 2-Pickup 5-Knob 1-Switch 3-Band Vol - Bl - Treb - Bass - Mid - Mid Sw

    $199.00
    Bartolini 5.4 Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control Configuration Volume Blend Treble Mid Bass Mid...
  24. Bartolini 2.4AP Compact Preamp 1-Pickup 3-Knob 3-Band Vol P/P A/P - Mid P/P - Treb/Bass Stack

    $184.00
    Bartolini 2.4 AP
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control...
  25. Bartolini 5.2AP Compact Preamp 2-Pickup 5-Knob 3-Band Vol P/P A/P - Bl - Treb - Mid P/P - Bass

    $192.00
    Bartolini 5.2 A/P Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control...
  26. Bartolini 5.4AP Compact Preamp 2-Pickup 5-Knob 1-Switch 3-Band Vol P/P A/P - Bl - Treb - Bass - Mid - Mid Sw

    $208.00
    Bartolini 5.4AP Compact Preamp
    The new Bartolini NTMB Systems have eliminated the second module and have only the single 1-3/4" x 1" x 1/2" module. There is also a weight saving on the new systems of 20 grams. Control...
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