Advertisements or should I say 'can' it send to a A/V receiver via HDMI? Other than PCM being a two channel 'lossless' transmission method, what surround sound formats (Dolby and otherwise) does it send out assuming the program material is in one of those surround formats (not just plain 'stereo' or mono)? On my Yamaha RX-V675 A/V receiver, if I use the "Straight" sound program mode (no decoding) it shows 2 active channels. When I switch the decoder to "Dolby ProLogic II Movie", it shows all 6 speaker channels active (no sub or center), but it's not obvious if it is just the receiver that is creating it's 'surround' sound, or actually decoding what is being sent from the TiVo (OTA Roamio if it matters). IOW's, the long (which seems almost endless) list of Dolby versions; https://www.digitaltrends.com/home-...ound-sound-guide-different-formats-explained/ Is it at least 5.1 that can be decoded for it's internal surround sound decoder(s)?