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.
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.