Ultra Series THX 1000 Digital Coaxial Interconnect. Allows enjoyment of movies with Dolby Digital and DTS surround sound. High purity silver plated copper stranded coax for improved signal transfer and low energy loss. Easy to identify color-coded bands for simple, error-free hookup. High density double-shielding for maximum rejection of RFI and EMI. Heavy-duty, color coded molded grip for easy handling. Exceeds THX certification standards for proper system performance, reliability and ease of installation. PEX dielectric reduces signal loss and distortion. Silver content solder connections for improved frequency response.