The Comprehensive CCN-ADDA Universal Digital/Analog Audio Converter with Dolby Digital Decoder can convert among Optical, Coaxial and analog audio signals. With the ability to convert digital signals into analog and analog signals into digital, this device supports the simultaneous conversion of audio formats so when converting Optical into analog audio you can also convert it into Coaxial. Therefore, if you find yourself limited by multiple audio formats the Universal Digital/Analog Audio Converter with Dolby Digital Decoder is the perfect choice. Unit converts Analog audio to digital audio signal conversion (ADC), Digital audio to analog audio signal conversion (DAC), Simultaneous digital and analog audio output, and Downmixing of Dolby Digital signals. Unit is covered by our 2 year warranty.