Easy to use, original, and sonically immaculate. 

• INFO
• LAYOUT
• TECH

• These 2 Band preamps provide players with an uninhibited musicality derived from Carey Nordstrand’s own personal design. With an ideal feature set facilitating their great sound, these units have become popular with high end bass builders who love to install them as standard OEM preamps on their top level instruments. Given that they are available in many prewired configurations, these preamps have become extremely popular upgrades for basses at all levels of quality.

• 2B-3a (1 Pickup - 2 Band -- 3 Knob):
  Volume w/Active-Passive Push-Pull -- Treble -- Bass
  
  2B-3b (2 Pickup - 2 Band -- 3 Knob):
  Volume w/Active-Passive Push-Pull -- Blend -- Treble/Bass Stack
  
  2B-4a (2 Pickup - 2 Band -- 4 Knob):
  Volume w/Active-Passive Push-Pull -- Volume -- Treble -- Bass
  
  2B-4b (2 Pickup - 2 Band -- 4 Knob):
  Volume w/Active-Passive Push-Pull -- Blend -- Treble -- Bass
  
  2B-4c (2 Pickup - 2 Band -- 4 Knob):
  Volume w/Active-Passive Push-Pull -- Blend -- Tone -- Treble/Bass Stack
• 2B-3a wiring diagram
  
  
  2B-3b wiring diagram
  
  
  2B-4a wiring diagram
  
  
  2B-4b wiring diagram
  
  
  2B-4c wiring diagram
  
  
  Overall gain is 0 to 15db by a trim pot on the circuit board.
  
  Bass +/- 12db @ 50Hz
  
  Treble +/- 12db @4khz
  
  Switchable Treble Response Curve.
  
  Battery life is estimated to be around 250 hours for an alkaline 9v.
  
  Adding a battery to make it 18v will give more headroom and longer life.