So when I play stereo using the XLR the processing I'd done I the OPPO
When I play multichannel analog I want to be able to use the two DACS in the OPPO.
Can I plug both the XLR and the RCA in the stereo audio out?
I need your answer to my two questions.
Yes, you can connect both the XLR and RCA pairs from the Dedicated Stereo set, but they will both be subject to the same settings. I.e., with Stereo Signal FRONT LEFT/RIGHT they will both be subject to the Speaker Configuration settings you have established for the normal LF/RF RCA jacks of the multi-channel set.
Here's what I do with my Anthem Statement D2v: I want to use Anthem Room Correction even when playing Analog audio input -- I won't restate the reasons here. To do that means I set the D2v to re-digitize the Analog input and do all of the audio processing.
And THAT means I DON'T want the OPPO to also be doing processing on its Analog outputs.
So I use the multi-channel outputs with all speakers set to LARGE, the Sub ON, all speakers equidistant, and all speakers with 0dB volume trim. Set that way, there is no Crossover processing done by the OPPO. (The D2v only allows 5.1 input via multi-channel Analog so I also have the OPPO set to 5.1 Down-Mix, which is only relevant when I play 7.1 tracks.)
Meanwhile I also have Stereo Signal FRONT LEFT/RIGHT set. This lets me cable the L/R RCA jacks from the Dedicated Stereo set in lieu of the normal LF/RF RCA jacks of the multi-channel set.
Now, when I play Stereo content via Analog, i use this EXACT SAME arrangement. The D2v sees 5.1 Analog input with everything silent except for the LF/RF channels. It process that into 2.1 speaker output for me, via ARC.
When I play Multi-channel content, this configuration works the same way -- with all Crossover processing, distance adjustment, volume trims, and room correction handled in the D2v.
This ALSO means I can easily flip between SACD Output PCM and DSD. When using SACD Output DSD, all audio processing in the OPPO is bypassed. But since my configuration for PCM is *ALREADY* set to bypass just such processing, I can change between PCM and DSD via the OPPO DACs without having to do any other, compensating adjustments. Again, Crossover processing and etc. happens in the D2v.
Now, I could hook up the L/R XLR pair from the Dedicated Stereo set and use that to play stereo content. Since I have LF/RF of the multi-channel set configured to do no processing that will also apply to this XLR pair. But the XLR input would get handled the same way in my D2v as the LF/RF from the multi-channel set so there's no need. There's one exception to this. The D2v can do processing on true stereo input -- things like PLIIx to fire up the Surround speakers. But when I play stereo content via the multi-channel set the D2v can't do that because it has no way of knowing the silence in the Center and Surrounds input channels isn't "real". I could hook up the L/R XLR stereo pair and select that in the D2v and then it would know the input is always and only stereo -- and thus it could provide things like PLIIx. But that's not something the interests me so I haven't done it.
NOTE that I could also enable DTS Neo:6 processing in the OPPO, and then Stereo content would be expanded into the Center and Surrounds as part of the multi-channel Analog output. I have done that for Beta Testing and it works, but it is not my preferred way of listening.