Digital cables carry audio data between streamers, transports, DACs, and network gear. Digital audio is still an electrical signal traveling on a wire, and that wire still has to deliver it intact. The format sets the requirement: coaxial runs at 75 ohm, AES/EBU at 110 ohm, and USB and Ethernet need correct twisted-pair geometry. A cable built to the wrong impedance creates reflections that reach the converter as timing error. Matching the cable to its format is the whole point.
The current digital cable range comes from Viablue, German-engineered with full-metal connectors and tight shielding. It covers coaxial RCA and AES/EBU for transport-to-DAC links, USB for a computer or music server, CAT6A Ethernet for network streaming, and precision Toslink optical. Each cable is impedance-matched to its format, so the connection between source and converter stays clean. For the full lineup, see the Viablue digital cables collection.