This is not for a computer...this is for a home theater system. If you're only looking for something to add high quality audio to a computer, stuck with something computer-oriented, such as the Creative SoundBlaster X7, which can handle anything from stereo to 5.1-channel output. For stereo output, it even has it own built-in 100W amplifier (for using non-powered bookshelf speakers). This, along with a pair of Definitive Technology Demand...