Preamps

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Best Bass Gear is proud to be able to offer you a wide array of onboard preamps for your EQ and tone shaping needs. We offer systems custom prewired in house and also wired by the manufacturer with a large selection of control configurations for almost any bass.We stock only the highest quality manufacturers including ACG, Aguilar, Bartolini, Glockenklang, John East, Mike Pope, Nordstrand, and Seymour Duncan.

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  1. Bartolini TCT-4.6 Pre-Wired Harness

    $196.00
    3 Band EQ, 4 Pots: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Blend) (Volume)
    Bartolini TCT-4.6 Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  2. Bartolini TCT-4.6AP Pre-Wired Harness

    $208.00
    3 Band EQ, 4 Pots: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini TCT-4.6AP Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  3. Bartolini TCT-4.7 Pre-Wired Harness

    $216.00
    3 Band EQ, 4 Pots, 1 toggle: (Treble/Bass Stack) (Mid) (250,500,800Hz Mid Toggle) (Blend) (Volume)
    Bartolini TCT-4.7 Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  4. Bartolini TCT-4.7AP Pre-Wired Harness

    $224.00
    3 Band EQ, 4 Pots, 1 toggle: (Treble/Bass Stack) (Mid) (250,500,800Hz Mid Toggle) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini TCT-4.7AP Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  5. Bartolini TCT-4.6APJ Pre-Wired Harness

    $208.00
    3 Band EQ, 4 Pots Jazz Layout: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini TCT-4.6APJ Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  6. Bartolini TCT-4.7APJ Pre-Wired Harness

    $224.00
    3 Band EQ, 4 Pots, 1 toggle Jazz Layout: (Treble/Bass Stack) (Mid) (250,500,800Hz Mid Toggle) (Blend) (Volume)
    Bartolini TCT-4.7APJ Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  7. Bartolini TCT-5.0 Pre-Wired Harness

    $188.00
    3 Band EQ, 5 Pots: (Bass) (Mid) (Treble) (Blend) (Volume)
    Bartolini TCT-5.0 Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  8. Bartolini TCT-5.0AP Pre-Wired Harness

    $196.00
    3 Band EQ, 5 Pots: (Bass) (Mid) (Treble) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini TCT-5.0AP Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  9. Bartolini TCT-5.2 Pre-Wired Harness

    $192.00
    3 Band EQ, 5 Pots: (Bass) (Mid with 250/800Hz push-pull) (Treble) (Blend) (Volume)
    Bartolini TCT-5.2 Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  10. Bartolini TCT-5.2AP Pre-Wired Harness

    $199.00
    3 Band EQ, 5 Pots: (Bass) (Mid with 250/800Hz push-pull) (Treble) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini TCT-5.2AP Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  11. Bartolini TCT-5.3AP Pre-Wired Harness

    $216.00
    3 Band EQ, 5 Pots, 1 Toggle: (Bass) (Mid) (250,500,800Hz Mid Toggle) (Treble) (Bridge Volume) (Neck Volume with Pull-Bypass Switch)
    Bartolini TCT-5.3AP Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  12. Bartolini TCT-5.4 Pre-Wired Harness

    $208.00
    3 Band EQ, 5 Pots, 1 Toggle: (Bass) (Mid) (250,500,800Hz Mid Toggle) (Treble) (Blend) (Volume)
    Bartolini TCT-5.4 Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  13. Bartolini TCT-5.4AP Pre-Wired Harness

    $216.00
    3 Band EQ, 5 Pots, 1 Toggle: (Bass) (Mid) (250,500,800Hz Mid Toggle) (Treble) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini TCT-5.4AP Pre-Wired Harness TCT is the original Bartolini on-board preamp. It has Bass, Mid, and Treble controls with very low noise and wide adjustment range. Bass and Treble bands can be boosted or cut. The TCT preamp has a voice...
  14. Bartolini XTCT-2.4AP Pre-Wired Harness

    $192.00
    3 Band EQ, 3 Pots: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Volume with Pull-Bypass Switch)
    Bartolini XTCT-2.4AP Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  15. Bartolini XTCT-3.4 Pre-Wired Harness

    $204.00
    3 Band EQ, 3 Pots: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Neck Volume/Bridge Volume Stack)
    Bartolini XTCT-3.4 Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  16. Bartolini XTCT-2.5AP Pre-Wired Harness

    $184.00
    3 Band EQ, 4 Pots: (Bass) (Mid with 250/800Hz push-pull) (Treble) (Volume with Pull-Bypass Switch)
    Bartolini XTCT-2.5AP Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  17. Bartolini XTCT-4.6 Pre-Wired Harness

    $196.00
    3 Band EQ, 4 Pots: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Blend) (Volume)
    Bartolini XTCT-4.6 Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  18. Bartolini XTCT-4.6AP Pre-Wired Harness

    $208.00
    3 Band EQ, 4 Pots: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini XTCT-4.6AP Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  19. Bartolini XTCT-4.7 Pre-Wired Harness

    $216.00
    3 Band EQ, 4 Pots, 1 toggle: (Treble/Bass Stack) (Mid) (250,500,800Hz Mid Toggle) (Blend) (Volume)
    Bartolini XTCT-4.7 Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  20. Bartolini XTCT-4.7AP Pre-Wired Harness

    $224.00
    3 Band EQ, 4 Pots, 1 toggle: (Treble/Bass Stack) (Mid) (250,500,800Hz Mid Toggle) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini XTCT-4.7AP Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  21. Bartolini XTCT-4.6APJ Pre-Wired Harness

    $208.00
    3 Band EQ, 4 Pots Jazz Layout: (Treble/Bass Stack) (Mid with 250/800Hz push-pull) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini XTCT-4.6APJ Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  22. Bartolini XTCT-4.7APJ Pre-Wired Harness

    $224.00
    3 Band EQ, 4 Pots, 1 toggle Jazz Layout: (Treble/Bass Stack) (Mid) (250,500,800Hz Mid Toggle) (Blend) (Volume)
    Bartolini XTCT-4.7APJ Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  23. Bartolini XTCT-5.0 Pre-Wired Harness

    $188.00
    3 Band EQ, 5 Pots: (Bass) (Mid) (Treble) (Blend) (Volume)
    Bartolini XTCT-5.0 Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  24. Bartolini XTCT-5.0AP Pre-Wired Harness

    $196.00
    3 Band EQ, 5 Pots: (Bass) (Mid) (Treble) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini XTCT-5.0AP Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  25. Bartolini XTCT-5.2 Pre-Wired Harness

    $192.00
    3 Band EQ, 5 Pots: (Bass) (Mid with 250/800Hz push-pull) (Treble) (Blend) (Volume)
    Bartolini XTCT-5.2 Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  26. Bartolini XTCT-5.2AP Pre-Wired Harness

    $199.00
    3 Band EQ, 5 Pots: (Bass) (Mid with 250/800Hz push-pull) (Treble) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini XTCT-5.2AP Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  27. Bartolini XTCT-5.3AP Pre-Wired Harness

    $216.00
    3 Band EQ, 5 Pots, 1 Toggle: (Bass) (Mid) (250,500,800Hz Mid Toggle) (Treble) (Bridge Volume) (Neck Volume with Pull-Bypass Switch)
    Bartolini XTCT-5.3AP Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  28. Bartolini XTCT-5.4 Pre-Wired Harness

    $208.00
    3 Band EQ, 5 Pots, 1 Toggle: (Bass) (Mid) (250,500,800Hz Mid Toggle) (Treble) (Blend) (Volume)
    Bartolini XTCT-5.4 Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  29. Bartolini XTCT-5.4AP Pre-Wired Harness

    $216.00
    3 Band EQ, 5 Pots, 1 Toggle: (Bass) (Mid) (250,500,800Hz Mid Toggle) (Treble) (Blend) (Volume with Pull-Bypass Switch)
    Bartolini XTCT-5.4AP Pre-Wired Harness XTCT is similar to the original TCT on-board preamp, but it has a mid-frequency notch at 500Hz for slap tone with more bass. The XTCT has Bass, Mid, and Treble controls with very low noise and wide adjustment...
  30. 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...
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