A common question that we receive is regarding running HDMI to your TV and then Optical / digital signal back to your receiver or DAC resulting in no audio.
The main reason why this usually happens is no fault of your TV or the NAD component you are trying to output it to. In fact the problem lies with HDMI; a closed copy-protected audio/video interface.
A TV will not strip off the HDMI delivered audio from the video and then pass the audio onto your NAD Receiver. This is a limitation of the HDMI copyright protection.
If you require audio over HDMI you will need to get a receiver that has HDMI pass through, or one that can output the audio as a analogue signal instead of digital. Additionally the optical jack from the source device (Blu-ray® Disc Player, DVD player, cable or satellite box) could be connected directly to the receiver or stereo system to get the sound.