The WASAPI interface to the Oppo UDP-203 is no longer available after my PC updated with Windows 10.
I have done the following:
- Uninstall, reboot, and install the Oppo USB DAC drivers (latest 3.34.0)
- Uninstall, reboot, and install the Roon Server (lastest stable version)
The ASIO driver is available but WASAPI is no longer listed.