Does anyone know for certain whether the Samsung LN46C600 is HDMI 1.4 compliant, specifically with respect to audio return channel? The "630" model seems to be more common but is supposedly identical, ...

HDMI ARC (Audio Return Channel) and eARC remove the need for a separate audio cable when sending sound from a TV to a compatible soundbar or AV receiver. For more, see what is HDMI ARC? HDMI eARC ...