XANTECH CPLTCX Optical-To-Coaxial Digital Audio Coupler (Discontinued by Manufacturer) Converts Digital Audio Signals From Optical-to-coaxial Format Combines With The Coaxial To Optical Digital Audio Coupler To Provide A Long-distance Alternative Using Lower-cost Coaxial Cable Rack Mountable Converts digital audio signals from optical-to-coaxial format Combines with the coaxial-to-optical digital audio coupler to provide a long-distance alternative using lower-cost coaxial cable Economically extend range of digital audio output by converting from costly optical cable to common coaxial cable Rack-mountable Includes power supply