Car audio amplifier with 700 watts RMS power at 1-ohm load (14.4v); 380 watts RMS at 2-ohm load (14.4v); 200 watts RMS at 4-ohm load (14.4v); Frequency response: 0 to 320 Hz (Bass Knob Included) Small footprint and compact chassis makes this mono amplifier easy to install in any vehicle or car audio application; but don’t let the size fool you, this 700 watt amplifier absolutely pounds Engineered to be the most efficient car monoblock amplifier in its class so that you can get the most out of your vehicle’s electrical system MOSFET pulse width modulated power supply and proprietary heat dissipation design will ensure the amplifier for car subwoofers runs cool for even the most demanding playlists 4-way protection circuitry features high voltage, low voltage, over current, and high-temperature protection; sleep easy at night knowing your class d amplifier car audio is protected The CT Sounds CT-700.1D is a compact 700-watt class d monoblock car audio amplifier. The 1-ohm stable mono-block amp features a Low Pass Filter (LPF), Subsonic Filter, and Bass Boost so you can get the exact sound you are looking for out of your amplifier.