The Aguilar - OBP-1TK On-Board Bass Preamp is an Aguilar preamp pedal, currently around $146.92. Close alternatives include the Aguilar DB 925 and the Ashdown James LoMenzo Mega Drive. It pairs well with the Keeley Aria and the Browne Amplification Gritador.

Aguilar - OBP-1TK On-Board Bass Preamp

Aguilar · pedal

The Aguilar OBP-1TK is a 2-band boost-only on-board bass preamp using all-discrete FET circuitry for passive bass guitar installation. It provides up to 18dB of boost at 40Hz for bass frequencies and 4kHz for treble with separate pots in the TK configuration. Compatible with 9V or 18V operation. The circuit has a characteristic inherent mid-scoop that adds a modern scooped character even at unity settings making it well suited to slap bass, funk, and R&B rather than mid-forward blues or rock contexts. Low noise floor and high headroom reproduce full bass dynamics cleanly.

  • bass
  • treble
  • mid
  • scoop
  • boost
  • modern
  • preamp
  • low noise
$146.92View on Reverb

Price updated Aug 27, 2026

Genres the Aguilar - OBP-1TK On-Board Bass Preamp is commonly used in

  • Blues
  • Rock
  • Funk
  • Jazz
  • Alternative
    citedInferred from shared tonal signals, not a stated genre tag.
  • Metal
    citedInferred from shared tonal signals, not a stated genre tag.

Pedals that stack with the Aguilar - OBP-1TK On-Board Bass Preamp

Keeley Aria

Keeley

27% match
$185.07via Reverb

The Aria's compressed, mid-boosted overdrive stacks with the OBP-1TK's own scooped bass EQ for a richer push.

Browne Amplification Gritador

Browne Amplification

26% match
$199via Reverb

The Gritador's asymmetrical, TS-voiced clipping gives the OBP-1TK's scooped, boosted preamp real gain to push into.

Maestro Orbit

Maestro

20% match
$59via Reverb

Add the Orbit's bold, vintage phase sweep on top of the OBP-1TK's own scooped, boosted bass preamp for subtle movement.

Xotic SP Compressor

Xotic

18% match
$147via Reverb

Run the SP Compressor before the OBP-1TK for subtle, harmonic sparkle before the amp's own scooped bass EQ reacts.

Catalinbread Epoch-Set

Catalinbread

12% match
$226.26via Reverb

Keep the Epoch-Set after the OBP-1TK — the scooped, boosted bass preamp stays clean and the warm tape echo trails behind it. — goes in the amp's FX loop (or last, into a clean amp)

Boss RV-5 Digital Reverb

pedal

10% match
$79.99via Reverb

Keep the RV-5 after the OBP-1TK — the scooped, boosted bass preamp stays clean and the spring-voiced reverb trails behind it. — goes in the amp's FX loop (or last, into a clean amp)

Ibanez TS808 Tube Screamer

Ibanez

tonal match

Aguilar - OBP-1TK On-Board Bass Preamp leans into a clean amp's front end, precisely the platform Ibanez TS808 Tube Screamer wants

DOD YJM308 Preamp Overdrive

Dod

tonal match

Into Aguilar - OBP-1TK On-Board Bass Preamp, DOD YJM308 Preamp Overdrive is right at home: it's built around a clean amp's front end

Cheaper alternatives

Ashdown Pro-FX Two-Band Boost

Ashdown

78% similarity
$34.99via Reverb

Shared character: amp, high_end, articulation

Electro-Harmonix Nano Operation Overlord

Electro-Harmonix

73% similarity
$78.78via Reverb

Shared character: amp, full, treble

Ashdown James LoMenzo KegaDrive Bass Distortion

Ashdown

73% similarity
$121.68via Reverb

Shared character: high_end, articulation, full

Ashdown James LoMenzo HyperDrive

Ashdown

70% similarity
$121.68via Reverb

Shared character: high_end, full, treble

Ampeg Classic Analog Bass Preamp pedal

Ampeg

70% similarity
$120.67via Reverb

Shared character: treble, middle, preamp

Ampeg Classic Analog Bass Preamp

Ampeg

95% similarity
$120.67via Reverb

similar tone character

Similar character

Aguilar DB 925

Aguilar

72% similarity
$139via Reverb

Shared character: articulation, jazz, presence

Ashdown James LoMenzo Mega Drive

Ashdown

72% similarity

Shared character: amp, high_end, circuit

Aguilar OBP-2TK

Aguilar

71% similarity

Shared character: high_end, presence, treble

Sadowsky SBP-1 Bass Preamp/DI

Sadowsky

70% similarity

Shared character: full, presence, treble

Sadowsky SBP-2 Bass Preamp

Sadowsky

70% similarity

Shared character: high_end, presence, treble

Master Effects Manta Ray 3-band Bass Preamp

Master Effects

70% similarity

Shared character: full, treble, middle

See all alternatives to the Aguilar - OBP-1TK On-Board Bass Preamp (cheaper + boutique) →

Questions people ask

What are good alternatives to the Aguilar - OBP-1TK On-Board Bass Preamp?+

The closest matches in character are the Aguilar DB 925, the Ashdown James LoMenzo Mega Drive, the Aguilar OBP-2TK. Budget picks: Ashdown Pro-FX Two-Band Boost, Electro-Harmonix Nano Operation Overlord, Ashdown James LoMenzo KegaDrive Bass Distortion.

What pairs well with the Aguilar - OBP-1TK On-Board Bass Preamp?+

Strong matches from rig and tone-complementarity evidence: Keeley Aria, Browne Amplification Gritador, Maestro Orbit — The Aria's compressed, mid-boosted overdrive stacks with the OBP-1TK's own scooped bass EQ for a richer push..

How much does the Aguilar - OBP-1TK On-Board Bass Preamp cost?+

Around $146.92 (live listing price, updated Aug 27, 2026).

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