: For the highest quality audio from DVD players or modern TV optical outputs, use the Optical or Coaxial Digital jacks. Push optical cables straight in until they click. Do not bend them.
: This is the recommended default mode. It detects the incoming audio stream and decodes it exactly as intended (e.g., handling 2-channel music as stereo and automatic mapping of 5.1 movie soundtracks).
: Rated at a clean 0.7% under standard conditions.