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NOLL TCM2 Jazz Bass 2-Pickup 4-Knob 2-Band Vol P/P A/P - Bl - Treb - Bass

SKU:BBG 6812


  • 2-pickup, 2-band, 4-knob
  • Volume (Push-Pull Active/Passive) - Blend - Hybrid Treble - Bass
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Control Configuration

2-Pickup 2-Band System

  1. Volume(Active/Passive Push-Pull)
  2. Blend
  3. Bass
  4. Treble (Passive tone in passive mode)

Onboard Preamp


The NOLL TCM 2 for Jazz Bass ®is a compact equalizer that provides and easy and space-saving installation.

The TCM2 is a complete assembly with Volume push/pull (Active/Passive), Blend, Bass, and Hybrid Treble (Passive tone in passive mode).

Includes controls mounted to control plate, output jack, and chrome knobs.

The Bass and Treble controls are center-detented and allow 15 dB of boost and cut with a gentle slope of 6dB per octave which results in a natural, transparent, and true sound.

This equalizer can be powered with a minimum 9-volt battery, or 18v to ensure more headroom and longer battery life.

The NOLL TMC 2 can be combined with either active or passive pickups.

Potentiometers have a 6mm solid shaft, while any stacked control has 4mm upper, and 6mm lower solid shafts.

Recommended For:

This preamp is intended for a 4-knob control layout with the output jack on the side of the bass like the Fender Jazz Bass® Deluxe.

Installation Depth:

  • 29 mm without battery
  • 36 mm with battery
  • Technical Specifications

    The low impedance output of the TCM 2 provides other great features. You can run a cable for up to 100 feet (30 m) without losing high frequency response.

    Input Impedance >1 MOhm
    Output Impedance <10 KOhm
    Input Sensitivity max. 450mV @ 9V
    Output Voltage max. 4,5V @ 9V
    S-N-Ratio 96dB (1KHz/5Vss)
    Bass Control +/- 15dB @ 80Hz
    Treble Control +/- 15dB @ 4,2KHz
    Operating Voltage +9V (+18V optional)
    Power Consumption typ. 0,4mA @ 9V / 1200h Batt. Life
    Dimensions 21x21x12 mm


    Rate and Review this item
    Verified Buyer
    Great preamp
    By Chris Wenkle from on 6/2/2016
    I purchased my Noll TCM2 Jazz Plate from BBG, and subsequently installed it into a Fender MIM Jazz 5-string from the late 90's. The bass has Nordstrand single coils and already sounded great passively. I decided to install the Noll and run it at 18v utilizing a double battery box - also purchased from BBG. The bass sounds WAY better now without losing any of the sweet character of those Nordstrand pickups. Plus, it has greater flexibility with A/P on the volume pot, and passive tone control in the treble pot. What I find truly remarkable is that I can get up to 1200 hours of battery life with this preamp.

    Klaus Noll really has a gift for designing exceptional preamps, and I've tried most of the other brands out there: Duncan, Bartolini, Aguilar, EMG, and Audere to name a few. The feature I think I like best about the Noll is it is VERY musical sounding. Plus the boost/cut slopes are usable throughout almost all of their range. Some preamps I've tried are far too strong and have way too much boost and cut. The Noll is just about perfect. If you are contemplating an upgrade to an existing preamp, or just want to go from passive to active; give any of these Noll preamps a try. You won't be disappointed.