Finally got this setup at weekend after waiting for stands and extra speaker. For some reason even though a disc states that it is also in DTS I get no sound when selecting the DTS input. Anyone got any ideas? Not sure if it the auto function that it mentioned on set up so may always prefer dolby digital. Hate my folks Denon F100 where you have to press the two middle search/track buttons to change input modes. The Denon 550 seems a lot easiere but just cannot get DTS. May be something simple but anyone else found this.