As far as we know currently Korg Audiogate will not play native DSD via asio
driver. It's down sampled to PCM. I'm in communication with a Korg engineer
about how this possibility can be enabled. I will let you know what they say,
but for now your best bet for Win DSD playback is the HQPlayer from
Signalyst.com.
We hope to post the new firmware for Mytek on Monday on the website - this
will enable DSD functionality with Signalyst player.