Coaxial to optical digital audio converter transforms an rca coaxial spdif digital audio signal to a toslink optical digital audio signal this allows conversion between the most common digital audio formats for example connect a dvd player or sound card with a coaxial digital output to a digital amplifier or mini disc recorder with an optical input key features input coaxial digital pcm audio via rca connector output optical digital audio via toslink connector size 0 8 high x 2 8 wide