Reduced diameter, precision impedance, low-loss twisted-pair cable for two channel 110 ohm AES/EBU format digital audio. Each oxygen- free conductor of the twisted-pair is insulated with a low k constant, gas-injected foam polyethylene or foam polypropylene dielectric. Pairs are precision twisted to a tight lay with non-conductive polyethylene filler rods and shielded with a copper serve or braid shield. These construction techniques lower the attenuation and stabilize the impedance, thereby reducing the occurrence of cable induced bit-errors and jitter. Ends are terminated with Neutrik black & gold XLR connectors.