The Belkin PureAV Digital Optical Cable is ideal for DTS and Dolby Digital surround sound home theater setups. It uses polished optical terminations and optical fiber to transfer digital signals, which prevents electromagnetic and radio frequency noise, leaving you with greater sonic accuracy and a more detailed, natural sound. The precision-molded, corrosion-resistant connectors help produce a natural-sounding midrange, and the cable is manufactured to stand up to extended use.Expires Dec 14, 2010