Pricing and availability

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Average Price: $161

Budget/Beginner

$199

$500+

Price Tier

Budget

Standard

High-end

Price History

Based on price data from 4 merchants for "Aguilar OBP-1 Preamps". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Introducing the Aguilar OBP-1 Preamps, a game-changer for bassists seeking the perfect blend of clarity and punch in their sound. With its unique boost-only design, the OBP-1 ensures your instrument's natural voice shines through, enhanced, not overshadowed. This preamp is engineered for musicians who demand precision and versatility in tone shaping, offering a significant dynamic range with minimal noise.

The discrete, all-FET circuitry of the Aguilar OBP-1 delivers up to 18dB of boost at both 40Hz and 4kHz, allowing for both deep, resonant lows and crisp, clear highs. Whether you're laying down the groove in the studio or bringing the thunder on stage, this preamp provides the tonal flexibility you need to stand out. Its operation at either 9V or 18V gives you additional headroom, ensuring your bass sounds full and dynamic under any circumstances. Included is a stacked Treble/Bass pot for easy and intuitive control over your sound. Designed by bass players, for bass players, the Aguilar OBP-1 Preamps brings your bass to life in ways you've only dreamed of. Experience the difference in your sound today.

Key Features:

  • Boost-only design preserves the natural sound of your instrument
  • Up to 18dB of boost at 40Hz and 4kHz for dynamic tone shaping
  • Operates at either 9V or 18V for added headroom
  • Discrete, all-FET circuitry for low noise and high dynamic range
  • Includes stacked Treble/Bass pot for integrated control over your sound

Product specs

Type 2-band Preamp, Boost-only
Instrument Bass
Active/Passive Active (requires 9V battery)
Features Stacked Treble/Bass Pot

FAQs

What is the main function of the Aguilar OBP-1 preamp?

The Aguilar OBP-1 is a 2-band boost-only preamp designed to enhance bass guitars by providing high headroom and low distortion, allowing for dynamic tone shaping while maintaining the instrument's natural sound.

Does the Aguilar OBP-1 preamp require a power source?

Yes, the Aguilar OBP-1 is an active preamp that requires a 9V battery to operate.

Can the Aguilar OBP-1 preamp be used with any bass guitar?

The Aguilar OBP-1 is designed for use with most bass guitars, but it's important to ensure compatibility with your specific instrument's electronics and cavity space.

What tone controls are available on the Aguilar OBP-1 preamp?

The Aguilar OBP-1 features a stacked treble and bass pot, allowing you to boost both the bass and treble frequencies for enhanced tone control.

Is the Aguilar OBP-1 preamp suitable for live performances?

Yes, the Aguilar OBP-1 is suitable for live performances, offering robust tone shaping with high headroom and low distortion, ideal for maintaining clarity and punch on stage.

Marcin Pendowski

Marcin Pendowski

Aguilar AG4J - 70 PICKUP & OBP - 1 PREAMP SOUNDTEST

Video thumbnail for Aguilar AG4J - 70 PICKUP & OBP - 1 PREAMP SOUNDTEST by Marcin Pendowski

Aguilar AG4J - 70 PICKUP & OBP - 1 PREAMP SOUNDTEST

Marcin Pendowski

Marcin Pendowski

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Aguilar OBP-1 Preamps.

Mods and upgrades

  • Replacing the V-Mod Fender pickup with Aguilar AG 4P-HOT significantly enhances low-end response and reduces brightness, offering improved power and attack with the OBP-1 preamp.

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  • Active EMG pickups can be paired with the Aguilar OBP-1, requiring a 25k volume pot for proper functionality.

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  • The Spector Rebop equipped with Aguilar OBP-1 preamp can use a stereo barrel jack for compatibility with active EMG pickups.

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Comparisons

  • The Aguilar OBP-1 preamp alone cannot replicate the tone of a Modulus bass with a carbon fiber neck and MM-style Bartolini pickup, even with pickup upgrades.

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  • The Aguilar OBP-1 preamp is noted for not having the same excessive output as some other preamps, making it more compatible with active pickups.

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User experience

  • Adding the Aguilar OBP-1 preamp to a P-Bass increases output but can result in excessive brightness without the right pickup pairing.

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Setup and maintenance

  • Use pickup manufacturer's recommended volume pots: 500k for humbuckers, 250k for single coils, and 25k for active pickups with the Aguilar OBP-1 preamp.

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Features and functionality

  • The Aguilar OBP-1 preamp includes 25k pots for bass and treble controls; volume pot value should match pickup type, as the preamp is post-volume in the circuit.

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  • The OBP-1 preamp can be powered in conjunction with active EMGs using a single battery, although battery life may be reduced.

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Use cases and applications

  • The OBP-1 preamp with active EMGs suits players looking to emulate the sound of older Spector models like the Euro NS2.

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