The GefenTV Digital to Analog Decoder box takes your multichannel coaxial or optical digital audio source and converts it to stereo analog audio -- without the need for any other equipment! With the GefenTV Digital to Analog Decoder you can listen to your digital audio sources such as DVD and CD players on your legacy analog sound system, preserving your current invesent. A coaxial or optical audio output on your digital audio source connects into the input on the converter. The input type is chosen with the converter's selector button. The converter is connected to power. Analog RCA-type Left and Right outputs on the Converter output stereo analog audio to compatible audio equipment.