@curiousjim is quite correct about the Oppo players. I tried to get the best two channel audio, as I listen to both SACD and DVD-A, from the Oppo. Unfortunately the DSD signal gets converted back to PCM when you try to use the XLX/RCA, as well as multi-channel analog outputs.
If you are a DVD-A/ PCM guy then you can enjoy it, but you will have to stay with the HDMI connection to enjoy pure DSD. To try to solve this dilemma I upgraded to a Yamaha CD-2100 player.; which is now in a separate stereo system. You mention you looked at the CD-1000. For SCAD playback the 2100 will play back SACD 2 Hz to 50kHz and the playback range for the player is up 96kHz. It is not entirely clear from reading their O & M and reading the few reviews online, if this in native DSD. I hope so as that is one of the main reasons I bought the player. This player will not play the multi-channel layer on a SACD.
I would think if you wan to listen to higher resolution you would only be able to use the DAC and the optical or coaxial digital outputs only.
Regardless this player sound exceptional playing redbook CD and SACDs. The DAC sounds exceptional as well with the Steinberg.