The Digital Line Audio is an optical digital audio connection that is used to convey digital audio indications between devices. It aids uncompressed PCM stereo audio, and DTS multichannel audio for people who are involved in the surround sound systems. Digital Line Audio works on the digital audio technology. It can manipulate, generate, record, store and reproduce the sound by making effective use of the audio signals, encoded in digital way. It allows for the sequence of discreet samples, which are taken from the analog audio waveform.