The GTV-AAUD-2-DIGAUD is a analog to digital audio adapter converts analog left/right RCA-style audio connections to digital S/PDIF or TOSLINK outputs. The unit is compact, easy to install, and operates in a wide variety of operating conditions. Simply plug in the analog audio source into the RCA jacks, then connect the digital receiving device to your choice of either coaxial or optical digital output. Power-cycle all connected equipment, and enjoying the digitally converted audio from the analog source at the receiving device.