DESC: Compact Half DIN Size Mounts in or under Dash 6 Channel RCA Output (Sub,Mid,High) 2 Channel RCA Input Jacks Infinitely Adjustable Crossover Points Sub:32-400Hz, Mid:32-400Hz, High: 640-8000Hz Impedance Output Gain Control per Band (3) Subwoofer Phase Shift Adjustment Frequency Extender (Factor 1:20) LED Power On Indicator Fully Isolated DC to DC Power Supply 12dB per Octave Slope Frequency Response: 20Hz-30kHz Signal to Noise Ratio: >90dB Distortion: 0.01% @ 1kHz