PYLE PLXR2 Electronic Subwoofer Crossover Network with 12dB Bass Boost Electronic Low Pass Crossover Network Low Level RCA Inputs High Level Line Inputs RCA Line Outputs Lowpass Crossover 50 Hz/ 90 Hz/ 180 Hz Selectable Subwoofer Bass Boost 45 Hz/ 80 Hz/ 120 Hz Variable Gain Adjustment LED Power Indicator 12dB Bass Boost Mounting Hardware Included DC 12 Volt Dimensions: 3.6''W x 5''D x 1.10''H Sold as : Unit Electronic Low Pass Crossover Network - Selectable Subwoofer Bass Boost 45 Hz/ 80 Hz/ 120 Hz - DC 12 Volt Low Level RCA Inputs - Variable Gain Adjustment - Dimensions: 3.6''W x 5''D x 1.10''H High Level Line Inputs - LED Power Indicator RCA Line Outputs - 12dB Bass Boost Lowpass Crossover 50 Hz/ 90 Hz/ 180 Hz - Mounting Hardware Included