The DC-PS800x4 is a compact series full bridge amplifier capable of making 800 watts. It’s High power 4 Channel amplifier. It has 4awg inputs and can be ran 4 ohms per channel, 2 ohms per channel or bridged at 4ohms The Crossover network is what makes this one really shine, A section for channels 1/2 and 3/4 including Gain, HPF, LPF, Full Range AND a x10 switch to be able to active run your highs. Output Power (RMS) 4 ohm 130Wx4 @ 14.4 Volts 2 ohm 220Wx4 @ 14.4 Volts 4ohm rms bridged power : 450W x 2 Key Features 4 ohm bridged stable 2 ohm stereo stable Variable low pass filter Variable High pass filter Full Range Output 9-16.0 Volts Capable x10 Crossover Switches Tiffany Style RCA Jacks Power / Protect LED AMP SPECS: DC Amp Model: PS-800x4 Input Sensitivity 8V~0.4V Frequency Response 10Hz~30KHz 12dB / Octave Crossover YES High / Low Pass / Full Range w/ x10 Switch YES 50-500Hz Subsonic Filter NO Bass Boost @45hz NO Phase Shift NO Remote Control NO Clip Indicator NO Signal to Noise Ratio dB90 Damping Factor 90< THD @ 4ohms 0.1% Fuse Rating External 80 amp LED Status Lights Power/Protect Master/Slave NO Heatsink Length 5.51"/140mm Heatsink Width 5.23"/133mm Heatsink Height 2.3"/60.0mm