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Aguilar OBP-2TK On Board Bass Preamp  

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Wired up with one 9V battery, this onboard preamp will fit into just about any bass. +/-18dB at 40Hz and +/- 16dB at 6.5Hz. Stacked controls.

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Wired up with one 9V battery, this onboard preamp will fit into just about any bass. +/-18dB at 40Hz and +/- 16dB at 6.5Hz. Stacked controls.

  • Low-noise, discrete FET input stage
  • +/-18dB bass at 40Hz
  • +/- 16dB treble at 6.5kHz
  • Separate treble and bass knobs
  • Bass control: plus/minus 18dB @ 40Hz
    Treble control: plus/minus 16dB @ 6-1/2kHz
    Input impedance: 1 meg ohm
    Output impedance: 100ohm 9V or 18V operation (additional 6dB with 18V)
    Distortion: .019 into 10k ohm load
    Noise: -95dBm unweighted.
    Battery life: 324 hours
    Wire lead length: 6-1/2"
    1"W x 1"H x 1/2"D
    10-year limited warranty
Aguilar Amplification's DB series of electronics are covered under warranty to the original owner for a period of ten years from the date of purchase against defects in materials and workmanship. AG series electronics, GS series speaker cabinets, and S series speaker cabinets are covered by the warranty for a period of 3 years. Tubes are covered by the warranty for a period of six months.

The warranty period starts from the date of purchase from an authorized Aguilar dealer. Your sales slip or purchase invoice is necessary for warranty service.

Before sending your unit to Aguilar for repair, you must receive a return authorization number from us. Contact us via phone, fax, or email ( with a description of the problem. We will then issue to you a return authorization number.

You are responsible for all shipping charges. You must ship the unit to us freight prepaid. We will return the unit to you freight collect. If the unit is being sent from outside the United States you will also be responsible for customs brokerage, if applicable. Please check with your freight forwarder for assistance.

Aguilar Amplification LLC is not responsible for shipping damage, either to or from our service center. Claims must be filed with the carrier.

The only company authorized to perform work under this warranty is Aguilar Amplification LLC of New York, NY.

Pro Coverage gives you added warranty protection for your new gear. Stepping in where the manufacturer's "normal wear and tear" coverage ends, our Pro Coverage program offers you upgraded coverage if your product ever fails Read More.

Pro Coverage includes
  • Accidental damage protection (new gear only)
  • Expedited repair
  • Free shipping (for returns or repairs)
  • 100% coverage for commercial use
  • Extended return period
  • Extended price protection
  • No lemon guarantee
  • Free transfer of coverage to a new owner
  • Repair costs covered for up to three years from date of purchase
  • Repair authorization-toll-free by phone or via the web
  • Customer Reviews

Review Snapshot

by PowerReviews
AguilarOBP-2TK On Board Bass Preamp

(based on 1 review)

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Reviewed by 1 customer

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(7 of 7 customers found this review helpful)


Best On-Board Pre-Amp I've Ever Owned!


from Akron, OH

Comments about Aguilar OBP-2TK On Board Bass Preamp:

I purchased the OBP2 for a retrofit of a passive five-string bass. The bass was very muddy before installing it. The OBP2 added a lot of clarity and warmth to the sound, especially to the low-end. I installed it so I could use two 9v batteries for 18v operation. Which really adds a big difference to the tonal characteristics. I especially liked the additional headroom on the treble side. I eventually sold the bass, however I removed the OBP2 so I could use it in another bass. I haven't used it in a 4-string bass, but I'm sure it'll sound great as well.

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