Cambridge Audio 851C. Go to Audio Advisor, look up the 851C and on that page click on the icon for a tutorial video. See also the 850C, the 851C's predecessor. You have your choice of formats of balanced digital input, coax, toslink (I think) and USB. The 851C is described as a CDP/DAC/Preamp.
The Oppo's only have HDMI digital audio in and USB, as far as I know.
Good luck. John
The Oppo's only have HDMI digital audio in and USB, as far as I know.
Good luck. John