The Aguilar OBP-2 was designed to give bassists fat tone while being small enough to fit in tight spaces. Wired up with one 9V battery, it will fit into just about any instrument. With +/-18dB of boost and cut at 40Hz and +/- 16dB of treble boost and cut at 6.5kHz you can emphasize the frequencies you want to make your bass sound great in any mix. Add a second 9V for an extra 6dB boost.
The OBP-2 was designed to give bassists fat tone while being small enought fit into tight control cavities. 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. The OBP-2TK includes separate treble and bass pots.

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. Additional 6dB with 18 volts.
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.