Frio Q5s DAC DSD upto 768

I Have a Fiio Q5s and I know its able to work with DSD files up to 768 using the USB Interface, However Audirvana indicates that DAC is not DSD capable and it converts all Files to PCM. Is there any thing I can do to send DSD files to DAC without converting them to PCM?

In dac settings of audirvana choose dsd over pcm 1.1, not automatic detection

By the way, 768 is pcm not dsd number…

Thank you it worked really well. and you are right this DAC works with DSD256 Files and sample rate 768Khz/32. Thanks.