My Directv RX has HDMI output, and an Optical digital output. I have the Optical out connected to a 990. In the DTV RX Menue you can select either PCM or Dolby Digital format. If PCM is selected I get Audio from my tv speakers and 990 defaults to DD PLIIx and is the only mode selectable. If DD is selected I get no Audio from TV and and all DD modes are available on the 990. I guess this makes sense as I understand that the HDMI audio is PCM. I still do not understand why anyone would want multichannel audio sent to a TV! I like the HDMI video connection very much and the digital connection does improved the PQ IMHO, However this audio situation is a wait and see for for me.