NTBT 2-Band EQ Preamp Module

Independent bass and treble control with adjustable gain

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 how to buy

Availability: Normally Stocked
SKU: NTBTG/918 Category:
SKU: NTBTG/918 Category:

The NTBT is a 2-band tone control preamp with fully independent Bass and Treble controls. The voice is clear, transparent, and strong with ultra-low distortion.
The NTBT features a pre-wired adjustable gain trimmer which allows you to boost the input signal up to 12dB (4X) to match the output of other instruments or tune the output to drive your level-sensitive effects.
Like all of our preamps, the NTBT is internally shielded to reject electromagnetic noise and includes internal filters to block AM and FM radio on the input. Bartolini set the standard of fully sealing the sensitive electronics. We use professional double tin plated pure copper wire with durable semi-rigid insulation. This ensures the 5” pre-stripped wires don’t flop around in the cavity and the wires don’t cut through the insulation over time.
Installation is straightforward by connecting the EQ band wires to your 50KΩ linear potentiometers along with volume control, battery connection, and output jack. Or you can use one of our pre-wired harnesses to make your upgrade even easier.
The preamp can be used with either a single 9-volt battery (9-volt operation) or two 9-volt batteries wired in series (18-volt operation) for 6dB extra headroom with no tonal change.

Availability: Normally Stocked

Ordering Details

Model Description UPC Price
NTBTG/918 Preamp Module, 2 Band, NTBT with Pre-wired Gain Trimmer, 9 or 18V 682384500224 $120

Ordering Details

Model UPC Price
NTBTG/918 682384500224 $120
Preamp Module, 2 Band, NTBT with Pre-wired Gain Trimmer, 9 or 18V

NTBT Technical Details

Preamp Module Size:
1.76" [44.7mm] Long,
1.02" [25.9mm] Wide,
0.54" [13.7mm] Thick
Operating Voltage:
9V or 18V - Prewired for 9V. An additional battery clip is included for 18V wiring.
Input Impedance:

Gain Control

  • The in-cavity gain trimmer lets you adjust the output level of your instrument. This lets you match output levels from several instruments for consistent response from level-sensitive effects 
  • Gain: 0-12dB

Bass Control

  • Boost or cut your low frequencies up to 5 times the flat signal. The bass frequency is great for E, B, and low F# strings.
  • Bass: +/-15dB@30Hz

Treble Control

  • Boost or cut your high frequencies to brighten or darken your tone. The NTBT gives you a constrained control range for precise voice adjustment.
  • Treble: +/-16dB@6KHz