Originally Posted by blaven2
To the ARC guys (Bob & soundofmind). I must say that I am confused. Why would you let the OPPO convert D to A and then take that analog, convert it again to digital, and then one final time D to A and out. If I am understanding you, this is a lot of extra processing.
If one is to use external processing, then Why not just keep digital out from the OPPO and then use just the external DAC? And, If this is the case, why not just use the 93?
Am I not understanding? Not trying to be critical, just very confused.
As I posted above. I use analog input for testing purposes only.
Now I'm not hearing any problems with analog processed this way. The re-digitizing, processing, and analog output stages in my D2v are doing a fine job.
But HDMI is more convenient for me, and, as you say, it eliminates some steps. Even if I don't hear problems due to those steps, eliminating steps puts the odds more in your favor. So I use HDMI Audio Input for all normal listening to stereo music, multi-channel music, and movies.
There's at least one audiophile case where HDMI offers a feature analog does not. In the one specific case of 5.1 DTS-HD MA 192Hz audio, the Oppo will decode that as 96KHz. That's what the analog outputs get, as well as what you get for HDMI LPCM output. But it will send the 192KHz Bitstream over HDMI and the D2v decodes that at 192KHz. NOTE: There is no such limitation on TrueHD or for stereo DTS-HD MA. And DTS-HD MA doesn't even support 192KHz on Blu-ray for 7.1 content so no limitation there either.
ETA: There's another limitation in the Oppo players which doesn't really fall into the audiophile category, but I'll add it here for completeness. The Oppos will not decode the matrixed rear channel information from traditional, lossy, 5.1 DTS ES tracks. Your processor may offer the feature to extract that from the analog or HDMI LPCM input (e.g., PLIIx processing), or you can use HDMI Bitstream and your processor may extract that as part of its decode. There's no such limitation for the equivalent rear channel hack offered on some lossy Dolby Digital tracks.
(Analog Audio Input Tip for Anthem D2v and AVM 50v users:
The analog output voltage of the Oppo players is a tad hotter than the Anthems are expecting. Go into the Analog Input Level settings on the Anthem and lower the input level for those Sources by -1.5dB. Also, for stereo analog input, be sure to go into the ADC settings in the Anthem and raise the default sampling rate for re-digitizing 2-channel analog to 96KHz. For the 6-channel analog input, that's already the default.)