Optimisation of Audirvana for best sound quality

[Devi200]

For me  Audirvana with Air 3.0 beta works also perfect. 

I am interesting to share the experience with the filter approach of Audirvana. I actual use the standard approach without upsampling, but I'm not shure if it is the best approach.

I think the DAC of my D400 works better than Audirvana.
So let us find out the best filter approach in combination with Air. May be by using USB other filter approach is nessesary.