SIIG's long-term business vision, comprehensive product line, effective marketing strategy and exceptional customer support have made SIIG the leading brand for computer add-on products. High-quality control standards are evident by one of the lowest defective return rates in the industry. PRODUCT FEATURES: Definition 7.1 surround sound transforms your PC into a home theater system; 8-channel output supports the newest Dolby Digital EX and DTS ES 6.1/7.1CH DVD audio formats; Supports the latest in 3D audio technologies, including Sensaura EAX, A3D, & DirectSound; Two Digital Input/Outputs deliver 24-bit/96KHz audio quality; Customize Internet audio with the power and surround sound of EAX audio technologies.