BOSS Audio Systems BX55 2 3 Way Pre-Amp Car Electronic Crossover with Remote Subwoofer Control

2/3-Way Electronic Crossover
Front/Rear/Sub Inputs/Outputs
Selectable Crossover Frequencies
- Front/Rear High Pass, Low Pass & Sub
Bass Boost
Sub Phase Control
Low pass Input Selector: Direct or Front/Rear Mix
Remote bass control