After hearing from another member that spoke with a rep from Yamaha, the RX-V661 does not do 7.1 LPCM with Dolby TrueHD or DTS-HD, and I don't know of any other LPCM tracks extending over 5.1 on any format other than Blu-ray or HD-DVD. This is from the 661’s manual, under “HDMI compatibility with this unit”: Multi-ch Linear PCM 8ch, 32-192 kHz, 16/20/24 bit I now recall there was something special about that unit.:D that and, IMO it looks so cool! :D