The OBP-2 was designed to give bassists fat tone while being small enough to fit into tight control cavities. 

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• Wire this preamp with one 9 volt battery and it will fit into just about any instrument. With +/-18dB of boost and cut at 40Hz and +/- 16dB of treble boost and cut at 6.5 kHz you have can emphasize just the right frequencies to make your bass sound great in any mix.
  
  This kit includes:
   - Aguilar OBP module
   - Potentiometers and switches (if applicable)
   - Stereo Jack
   - 2 Battery Clips
  
  This kit does NOT include
   - Pickups
   - Knobs
  
  Black round switches included with configurations requiring switches.
  
  Prewired OBP-2 Preamps are wired for 9V operation.
   
  Learn more about our Pre-Wiring Service here
  
  **Sorry international bassists, but US Dealers are not authorized to ship Aguilar OBP Custom Kits outside of the US.  Please contact us if you are having trouble finding Aguilar products in your home country.
• Configurations Offered:
  
  1 Pickup - 2 Knob (VPP-T/B)
  Volume w/Active-Passive Push-Pull -- Treble/Bass Stack
  
  1 Pickup - 2 Knob, 1 Switch (V-T/B-APSW)
  Volume -- Treble/Bass Stack -- Active-Passive Switch
  
  1 Pickup - 3 Knob (VPP-T-B)
  Volume w/Active-Passive Push-Pull -- Treble -- Bass
  
  2 Pickup - 3 Knob (VPP-BL-T/B)
  Volume w/Active-Passive Push-Pull -- Blend -- Treble/Bass Stack
  
  1 Pickup - 3 Knob, 1 Switch (V-T-B-APSW)
  Volume -- Treble -- Bass -- Active-Passive Switch
  
  2 Pickup - 3 Knob, 1 Switch (V-BL-T/B-APSW)
  Volume -- Blend -- Treble/Bass Stack -- Active-Passive Switch
  
  2 Pickup - 4 Knob (VPP-BL-T-B)
  Volume w/Active-Passive Push-Pull -- Blend -- Treble -- Bass
  
  2 Pickup - 4 Knob, 1 Switch (V-BL-T-B-APSW)
  Volume -- Blend -- Treble -- Bass -- Active-Passive Switch
  
  

• Bass control: plus/minus 18 dB @ 40 Hz

  Treble control: plus/minus 16 dB @ 6.5 KHz

  Input impedance: 1 meg ohm

  Output impedance: 100 ohm 9 or 18 volts operation

  Distortion: .019 into 10k ohm load

  Noise: -95 dBm unweighted.

  Battery life: 324 hours

  Wire lead length: 6.50 inches

  Low noise discrete FET input stage, center detent 50 K linear pots, with a dual concentric pot available

  Dimensions: 0.98″W x 0.98″L x 0.59″D

  Warranty: Three year limited warranty.

  
  WIRING DIAGRAMS FOR THE FOLLOWING CONFIGURATIONS:
  2 Knob (VPP-T/B)
  2 Knob, 1 Switch (V-T/B-APSW)
  3 Knob (VPP-T-B)
  3 Knob (VPP-BL-T/B)
  3 Knob, 1 Switch (V-T-B-APSW)
  3 Knob, 1 Switch (V-BL-T/B-APSW)
  4 Knob (VPP-BL-T-B)
  4 Knob, 1 Switch (V-BL-T-B-APSW)
  
  
  Aguilar's OBP2 wiring diagram
  
  
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• Below are impressions and anecdotal thoughts gathered over the years. Some are our own and some are from customers.

  • "I have the Aguilar OBP3 (and love it) in another bass, and knew this would be a good fit in my bass with less room for a third control"
  • "Boosts the sound without changing the basic tone of my bass."
  • Clear, Clean