M-Audio Sonica Theater USB 24-Bit Surround Sound Module Packs advanced technology into a small, light, bus-powered external package that's simple to connect and use Crystal clear audio quality with high resolution 24-bit / 96kHz audio playback and recording Conveys DVDs and music in surround sound, makes games shockingly realistic, and can be used to record or mix music High signal-to-noise ratio of 101dB ? clear, clean audio from whisper quiet to room shaking levels Dolby Digital EX decoding with included software based WinDVD 4 DVD player