I recently purchased a Denon 2200 DVD Player and a Denon 2803 Reciever, both of which have both DTS and Dolby Digital decoders (I believe). I've been fideling around with DVD-Audio and got all of the connections worked out now. My question is this: What is DVD-Audio? I understood DVD-Audio to be a separate standard from Dolby Digital and/or DTS, but at my local Best Buy, most of the "DVD-Audio" discs are DTS. Huh? The DTS-ES demo on my setup disc (the "Avia, Jr." a.k.a. "Home Theater Tune-Up") claims to be DVD-Audio, but is clearly DTS (hence the name). I understood a previous thread (DVD-A Connections) to state that I must use the 5.1 External Inputs on my reciever to get the "true high-res" DVD-Audio features, but the discs I bought (Eric Clapton and a classical music) play just fine on both DTS and EXT. In on my reciver. Secondly, and I'm sure that this will just muddy the waters, What is the point to SACD? In the store, they all seemed to be backward compatable with regular CD players (always makes me wonder...) and the format seems inherently inferior to DVD/DVD-A... Thanks for the clarification(s)!