Logitech Z623 400 Watt Home Speaker System, 2.1 Speaker System THX-certified 2.1 speaker system brings your music, movies and games to life in immersive studio-quality audio 400Watts of Peak/200Watts (RMS) gives you the power to listen as loud as you want to while the on-speaker controls lets you easily dial the volume and bass up or down RCA and 3.5mm inputs make it easy to plug in up to three audio devices - your computer, iPod, game console, DVD player and more Two satellite speakers and a powerful subwoofer deliver sound big enough to fill even large entertainment rooms