Terratec Soundsystem Aureon 7.1 FireWire. Audio quality: 24 bit, Audio output channels: 7.1, Line-out Signal-to-Noise Ratio (SNR): 109 dB. Host interface: FireWire. Bundled software: -Driver for PC (Windows XP) -Controlpanel for Windows XP -Remote control application. Minimum RAM: 256 MB, Minimum hard disk space: 100 MB