Monster Cable ULT I1000-4 THX Ultra 1000 Audio Interconnect Multiple gauge wire networks for accurate, natural sound reproduction. 12-cut Turbine 24k gold contacts for a superior connection. Exceeds THX certification standards for proper system performance, reliability and ease of installation. Bandwidth Balanced design for increased clarity and sonic accuracy. MicroFiber insulation for deeper, tighter bass and clearer highs.