https://wiki.jriver.com/index.php/DSD1) Enable DSD bitstreaming in MC's Options > Audio > Settings > Bitstreaming set it from None to DSD.
2) If you specifically want to use native DSD over DoP you have to use the ASIO driver provided by the DAC manufacturer and set MC's Options > Audio > Audio Device > Device settings... and make sure
DSD bitstream in DoP format isn't checked.
3) Make sure both system volume and internal MC volume is set to 100% (this is required for DSD bitstreaming to work).
4) In DSP Studio make sure Output Format > Output Encoding is set to None,
do not use any of the DSD options for native DSD or DoP there as it will convert everything (PCM and DSD) to DSD, which is a pretty resource intensive task.
Worth noting there is no audible difference between using native DSD and DoP, the end result is exactly the same. The only reason to use native DSD over DoP is if your DAC supports DSD512 and you want to playback content at that resolution. Typically DACs only support up to DSD256 over DoP, as it's tied to the max PCM sample rate the DAC supports and I've yet to see any DACs that support a PCM sample rate of 1411.2 kHz which would be needed to support DSD512 over DoP. You'd have to refer to the DAC's manual to see what the maximum it supports via both native DSD and DoP.