Tributaries - 4AB - Series 4 XLR Balanced Audio Cable (Pair) Series 4 balanced audio cables begin with ultra-pure highly conductive oxygen free copper (HC-OFC) developed specifically for audio applications. Conductors are solid gauge to prevent grainy distortion caused by stranded wire. The Series 4 balanced cables are a 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 4 XLR connectors have the female ground (pin 1) placed forward in the shell so the ground connects first. The Series 4 balanced cable is high performance cable that looks as good as it sounds. The 4AB is engineered with a pair of balanced precision twisted wires. The conductors are solid HC-OFC 22AWG copper wires that are insulated with LDPE for better sound and flexibility. The 4AB is terminated with XLR connectors. The wires are hand soldered with high-quality lead-free solder in Orlando, Florida to solid gold-plated brass XLR connectors. The connection is protected with a crimped strain relief and solid brass connector covers that have red & white colored rings for signal identification.