This is a brand new, factory sealed, never been opened Pyramid PB1617X, 4 channel car amplifier which retails for $249.99 plus sales tax. Give your sound system an affordable upgrade with this Pyramid Arctic Series amplifier. This 4 channel bridgeable amplifier delivers 2000 watts of pure, clean power! It has Tri-mode operation capability as well which means you can run full range speakers and a subwoofer simultaneously. It features 3-way protection circuitry (Short/Thermal/Overload). It is equipped with a variable subwoofer low pass crossover (50Hz-250Hz), high pass crossovers (120Hz- 3 kHz ), and input gain controls which allow you to seamlessly integrate this amplifier into your car stereo system and maximize the impact of your sub in your vehicle. The RCA low level inputs make it easy to connect to any setup while the low level output allows you to connect to additional amplifiers for added power. Complete with a full 2 year warranty and our exclusive 30 day money back guarantee.