Frisby 5.1 Surround Sound Dolby Digital Speaker System 100 Watt RMS Power Can be operated as either 5.1 Surround or Stereo Sound The system is plug and play. No additional receiver or amplifier required for stereo sound 2 Auxiliary Audio Inputs enables to connect 2 additional audio devices and control them via remote Subwoofer: W 7" D 15.3" H 11.4" / Satellites: W 3.5" D 3.3 " H 6.3"