【10" 800w Slim】: Under-Seat Powered Subwoofer Car Audio, Amplifier built in,The Shell Made of cast aluminum, with fast heat dissipation, reliable performance. 【Built-in Amplifier】: 800 Watts peak power output, 220 Watts RMS. With high speed MOSFET power supply, improved switching speeds, lower thermal impedance for higher switching frequencies. 【Amp Features】: (1) Variable Low-Pass Filter, frequency 50Hz-250Hz; (2) Low-Level Inputs (RCA)- High Level Inputs, for options; (3) Variable Bass Boost & GAIN Input, adjust the low bass within the boost range to just the way you like it. 【Dimensions】: 343mm*260mm* 82mm / 13.5”x10.2”x3.2" ; Unit Weight: 8 Lbs. The combination of amplifier and subwoofer all into one, make it is easy to be installed under the passenger’s seat. 【Easy Install】: Complete Wiring Kit & high to low level inputs adapter in the package, make the installation more easy. For the safety, we strongly encourage professional installation of this active car subwoofer.