I have a Fiio m3k DAP that is also a DAC. However, I can’t seem to get it working as a DAC with my PC which is running Windows10. I installed the driver and went into sound settings to set the m3k DAC as the default device. When I perform a sound test through control panel it works but that’s it. Won’t work when it comes to playing music. Just get a hiss coming out of my speakers. Any suggestions?