Tributaries - 6AB - Series 6 XLR Balanced Audio Cable (Pair) Series 6 balanced audio cables begin with ultra-pure highly conductive oxygen free copper (HC-OFC) developed specifically for audio applications. Each conductor is engineered with dual solid gauge wires that are mathematically and tonally chosen to support low, mid and high frequencies for a natural sounding cable. Individually insulating each wire yields zero strand interaction and better sound quality. The Series 6 balanced cables are precision twisted balanced in design. Dedicated conductors with equal impedance for positive and negative signals. The signal conductors are wrapped with dual shielding to keep noise from reaching the single path. To reduce signal hum during connection the Tributaries Series 6 XLR connectors have the female ground (pin 1) placed forward in the shell so the ground connects first. The end result is a neutral sounding cable. The 6AB is designed with two heavy 20AWG High Conductivity Oxygen-Free (HC-OFC) copper conductors with perfect twist for balanced audio. The conductors have a unique individually insulated dual-gauge configuration for superior sound clarity. The 6AB is terminated with XLR connectors. The wires are hand soldered with high-quality lead-free solder to solid gold-plated brass Series 6 XLR connectors. The shield is connected on the source end only making this cable directional and noise free. The connection is protected with a crimped collar strain relief and solid brass connector covers that have red and white colored rings for signal identification.