Bartolini NTMB+GF 3-Band Preamp Voiced For Fretted Bass

SKU:BBG 6178


Bartolini NTMB + GF 3-band preamp module

Custom Order

Bartolini makes these by hand and they need a little time. Based on past experience, it typically takes 4-8 weeks to get these to us. Order it now, to reserve your place in line, and we will ship it to you when we receive it from Bartolini.


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The NTMB+ GF is a preamp voiced for fretted bass with fully independent Bass, Mid and Treble controls with very low noise and wide boost/cut range. It is a single module for ease of installation and includes a gain trim.

The sound is very clear and transparent. Distortion is well below 0.001%. This preamp can be used with either 1 - 9 volt battery ( 9 volt operation) or 2 - 9 volt batteries (18 volt operation) which yields 6 dB extra headroom. In 9 volt operation the NTMB+ uses approximately 750 microamperes of current from 1 - 9 volt battery. This means 1 month of continuous duty or more than 6 months of average usage. In 18 volt operation the NTMB+ uses approximately 1000 microamperes of current from 2 - 9 volt batteries. This means more than 3 weeks of continuous duty or more than 4 months of average usage.

Other Details:

Mid frequency options.: 250, 500, 800Hz

See wiring diagram for available options.

Use 250k Volume and or Blend control for passive pickups, and 25k Volume and or Blend for active pickups. Use 50k Pots for EQ pots. See related products for potentiometers or our potentiometer and switches page below.

Potentiometers and Switches Page

Question: Where Can I Buy a Bartolini NTMB+GF 3-Band Preamp Voiced For Fretted 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
Bartolini preamp sounds awesome
By Aimiel
I love that it now comes in a compact setting. Prefer this more than the aguilar that I had because of transparency of sound. No coloring at all. The gain boost is such a useful bonus