I have an Oppo question: The 105 (which I have) says that DSD is only available through the HDMI and analog outputs, not the coax or optical. So, what's the best way to hook it up to the DSJr to maximize SACD performance?
It gets a bit complicated.
As already mentioned, you cannot capture the direct DSD data stream sent via HDMI as it is encrypted.
The S/PDIF of the 105 allows up to 24/192 PCM audio output for DVD-A, DVD Data, DVD Video, USB drive, and Blu-ray data. DSD will also play via S/PDIF but as converted PCM at 24/88.
(The SPDIF datastream is truncated from 24-bit to 16-bit when playing DVD-A copy protected discs, and the sample rate is converted to 48kHz irrespective of the native rate.)
You will see HDMI audio de-embedders. These route HDMI digital audio to a SPDIF output. However, while this allows you to play SACDs via the HDMI output, it works only if you have selected the layer’s DSD-to-PCM bitstream option. Oppos output DSD converted to PCM at 24/88. That is, you are not listening to DSD when you use one of these de-embedders, but rather to the same converted PCM datastream available on S/PDIF.