Aguilar OBP3SKPPSET 3-Band Stacked Boost/Cut On Board Bass Preamp with ToggleOBP 12 BAND, BOOST9 OR 18 VOLT ON BOARD PREAMP The OBP 1s boost only design gives you the tone shaping benefits of active electronics without losing the inherent sound of the instrument. The OBP 1s discrete, all FET circuitry features up to 18dB of boost at 40Hz and 4kHz, creating a sonic environment high in dynamic headroom and low in noise. OBP 1 FEATURES All FET design Two bands of boost Maximum amount of boost: 18db, occuring at 40 Hz for the