Bazooka BA1900D 1200W Max, Class-D Monoblock Car Amplifier 500 watts x 1 Channel @ 4 Ohms / 800 watts x 1 Channel @ 2 Ohms / 1200 watts Maximum Power Aluminum Extruded Heat Sink Chrome Plated Steel Endcaps Upgradeable to Bazooka C.H.I.L. System Amplifier Fusing Built-in Protection-short, Thermal, Overload THD: 0.08% Frequency Response: 20 Hz - 130 Hz Signal to Noise Ratio: >84 dB Bass Boost 0 - 12 dB Built In Crossover Low Pass Crossover Frequency Range: 40 Hz - 130 Hz DC Offset Protection / Short Circuit Protection Adjustable Input Sensitivity Dimensions: L18-3/4" x W9-1/2" x H2-1/4"