Detail 01
Bass: ±18dB at 40Hz
Centered low, at the fundamental rather than the punch. Boost adds weight and rumble; it won't thicken the midbass much.
Product detailSKU #1274115053207
AguilarOBP-2TK On Board Bass Preamp
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Independent shopping perspective
The Korena take
Two-band onboard bass preamp, $149.99. Bass and treble only, quiet and clean. For a player who wants powered EQ at the bass without adding a mid control.
Strong match
Who this is for
- Converting a passive P or J to active
- Players who want bass and treble at their fingertips onstage
- Recording rigs where a quiet, low-impedance output matters
Consider the trade-offs
When to look elsewhere
- Anyone who needs a midrange control
- Players unwilling to route a cavity or pay a tech
- Basses with no space for a 9V battery
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Treble: ±16dB at 6.5kHz
Sits above string attack, in the air and sizzle range. Boosting brings out finger and fret noise along with clarity.
Detail 03
1 meg ohm input impedance
Loads passive pickups lightly, so you keep the top end and natural resonance instead of the dulling a low-impedance input causes.
Detail 04
100 ohm output, 9V or 18V
Low output impedance drives long cables and DI boxes without losing highs. 18V adds 6dB more headroom before the circuit clips.
Detail 05
324 hour battery life
About 40 eight-hour days of playing, but only if you unplug the cable. A plugged-in jack keeps the circuit powered and drains it.
Detail 06
Noise -95dBm, distortion .019%
Quiet and clean enough that it won't add hiss to a recording. The circuit is meant to shape, not colour.
Final check
Know before you order
- 01Wire leads are 6-1/2 inches — check the run to your pots and jack
- 0218V operation needs two batteries and room for both
- 03Two bands means no mid knob; decide that before you buy
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Should I run 9V or 18V?
18V gives 6dB more headroom, useful if you dig in or boost hard and hear the circuit clipping. 9V is fine for lighter playing and takes half the space.
02How long does the battery last?
Rated 324 hours. Unplug your cable when you're done playing — leaving it in the jack keeps the preamp powered and burns through batteries fast.
03Does it have a mid control?
No. This is bass and treble only, at 40Hz and 6.5kHz. If you want mids, look at the OBP-3.
04Will it make my bass noisy?
Noise is spec'd at -95dBm unweighted, so the circuit itself is very quiet. Hum usually comes from shielding or single-coil pickups, not the preamp.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsPickups & controls
- Bass Control
- plus/minus 18dB @ 40Hz
- Treble Control
- plus/minus 16dB @ 6-1/2kHz
3 detailsConnections & power
- Input Impedance
- 1 meg ohm
- Output Impedance
- 100ohm 9V or 18V operation (additional 6dB with 18V)
- Battery Life
- 324 hours
1 detailsSize & weight
- Wire Lead Length
- 6-1/2 inch
2 detailsOther
- Noise
- -95dBm unweighted.
- Distortion
- .019 into 10k ohm load
