Aguilar OBP-3SK/PP 3 Band Boost/Cut 9 OR 18 Volt On Board Bass Preamp

The OBP-3 is Aguilar's most flexible onboard preamp design, providing +/-18dB of cut and boost at 40Hz, +/- 16dB of cut and boost at either 400Hz or 800Hz and +/- 16dB of treble cut and boost at 6.5 kHz.