Klipsch Audio CS-700 2.1 Home Theater with DVD and Wireless Audio, Black Frequency response 30 Hz to 20 kHz +- 3dB Amplifier power Subwoofer - 200W continuous; Speakers - FTC rated 75 W/channel continuous, 2 channels driven, &lt;=1% THD+N. Crossover 125 Hz, 24 dB/Octave MicroTractrix High-frequency Horn; midrange 3 paper cone in each of 2 satellites; subwoofer 8 downward firing Inputs Audio - Digital - Coax, optical; Analog - Line Level / Video - Aux1 - Composite, S-Video; Aux2 - Composite, S-Video, USB;