GefenTV Digital Analog Decoder converts audio encoded in Dolby Digital down to 2-channel L/R. Convert up to 5.1-channel audio encoded in Dolby Digital Surround to L/R analog audio -- without additional costly equipment! The GefenTV Digital Audio Decoder takes audio encoded in Dolby Digital (at up to 5.1 channels) from your multichannel S/PDIF or TOSLINK digital audio source and converts it to L/R analog audio -- without the need for any other external equipment! With the GefenTV Digital to Analog Decoder you can listen to digital audio sources such as DVD and CD players or digital computer audio on your legacy analog sound system, preserving your current investment. A coaxial or optical audio output on your digital audio source connects into the input on the Digital to Analog Decoder. The input type is chosen with the Decoders selector button. The Decoder is connected to power. Analog RCA connectors on the Decoder output L/R analog audio to powered speakers.