Sorry,i was confused with the 851C. I also believe using the 851D as DAC with your Onkyo would be an improvement. Use a quality 1.5 meter coax cable.
In as much as I believe the 850D represents good value at your quoted price, if you are not interested in having preamp function, there are many DAC options available for ~$800.
My limited attempt at describing DSD. DSD is direct stream digital with bits delivered 1 at a time at very fast rates, as apposed to PCM which is Pulse Code Modulation where bits (1s vs. 0s) are served in bytes (8, 16, 24 32) at different sample rates (44.1, 48, and multiples thereof). PCM serves redbook CD and internet streaming, DSD serves SACD and other forms of hi-rez file formats. There are several other on this forum who could provide a better explanation.
In as much as I believe the 850D represents good value at your quoted price, if you are not interested in having preamp function, there are many DAC options available for ~$800.
My limited attempt at describing DSD. DSD is direct stream digital with bits delivered 1 at a time at very fast rates, as apposed to PCM which is Pulse Code Modulation where bits (1s vs. 0s) are served in bytes (8, 16, 24 32) at different sample rates (44.1, 48, and multiples thereof). PCM serves redbook CD and internet streaming, DSD serves SACD and other forms of hi-rez file formats. There are several other on this forum who could provide a better explanation.