With the 990 (or any other non-HDMI processor) in the center of things, supporting DVD-A/SACD
and Blu-ray currently requires a compromise of some sort. (The issues that I'm going to describe now assume no HDMI audio support.) DVD-Audio and SACD both require analog output to work
at all - DVD-Audio will usually offer a stereo down-mix via coaxial or optical, but SACD doesn't even give you that. Blu-ray, on the other hand, adds four new formats that all are too big to fit across coax or optical, which once again requires the use of a multichannel analog connection. Fortunately, these new formats also contain a legacy DD or DTS track (also called a "core" track) that
can run across optical or coaxial.
What I'm doing is using the 7.1 analog input on the 990 with my DVD-A/SACD player (currently the OPPO 983H) while my Blu-ray player (currently the BD30) uses optical. This allows me to at least use all of the formats in some capacity, although I am unable to use any of the newer generation audio formats on Blu-ray.
If you are buying into Blu-ray today, you can make two choices. First, do what I'm doing and settle for core DD/DTS for now (using optical or coaxial out from the player) and let your DV-45A keep supporting DVD-A/SACD via multichannel analog. This approach will deprive you of multichannel PCM, DD+, TrueHD, DTS-HD, and DTS-HD Master Audio, but it lets you keep using SACD and DVD-A. In this scenario, there are plenty of Blu-ray players that will suffice, including my BD30 or the upcoming BD35 that's due later this month (the BD35 should be Profile 2.0 instead of just Profile 1.1). Or, you can get a Blu-ray player with decoding of all the new formats (like the BD55 that's due out this month or the Sony S550) and connect it with multichannel analog, at which point you'll have to quit listening to DVD-Audio and SACD.
Looking farther down the road, we've actually seen some pictures this week of the player that OPPO Digital has in development. (See
this thread ...) It will offer Profile 2.0 Blu-ray, decoding of all the new formats, 7.1 analog output, and it appears to have DVD-A/SACD to boot. That would allow someone with a non-HDMI processor to use DVD-A, SACD, Blu-ray (including multichannel PCM, DD+, TrueHD, DTS-HD HR, and DTS-HD MA), standard DVD, and CD all with a single player. There's no official release date yet, but it's likely to be after the first of the year (call it January to March 2009).
This post has taken me half the day to write (had to pause to take our daughter to the playground, bring her back, and feed her some lunch), so I don't know if others have already covered this effectively along the way...