If you plan on using the Oppo as a transport, be aware that the default setting for the coax digital output is RAW. You'll need to use the menu setting to change it to PCM if you plan to use an external DAC.
Oppo 980H setup and use
I am considering buying an OPPO 980H for audio purposes exclusively because I do not have a TV, nor do I intend on getting one. However, I have heard that you have to set it up on the TV screen and you cannot do it otherwise. Is this true, or can I still set it up without a TV?