Lanzar OPTIXA6B Optidrive 3-Way Electronic Crossover Network, 6-Channel Line Output 15V Line Driver and Remote Bass Boost Efficient Audio Signal Filtration - Simplifies Sound System Calibration - Allows for Full Range Stereo System Adjustment Fine-Tune Audio Signal Performance - 3-Way System Balancing: Bass (Low Pass), Mid-Range, Tweeter (High Pass) Crossover, Phase & Subsonic Audio Filtration - Maximizes System Output & Reduce Distortion Subwoofer, Mid-Bass, Band Pass 3, Band Pass 2, Band Pass 1, & High Output Level Configurable 6 Pair RCA (L/R) Audio Outputs *To Control Connected Signal Amplifiers - 3 Pair RCA (L/R) Inputs