Monster Standard THX-Certified Fiber Optic Digital Interconnect Cable - 4 ft. Digital Fiber Optic Cable Fiber Optic Digital Audio Hookup of DVD and other Components Using Dolby Digital Surround Sound Allows enjoyment of movies with Dolby Digital and DTS surround sound. Precision-polished fiber optic connector for maximum signal transfer accuracy and lower internal reflection. Specially optimized low-loss optical fiber for higher fidelity. Meets minimum THX certification standards for proper system performance, reliability and ease of installation.