Hi Damien,
Been a user ever since Audirvana started as free app. Loving it. Since 3.1, you gave new life to my DSD capable Denon receiver with streaming feature.
Now i prefer different settings for head phone and denon. Like upsample to DSD for denon and use software volume control. While i use 2x oversampling and DAC volume control for head phone.
It would help a lot (though am not sure how many will get benefited) If you could give an option to store settings based on audio device and load them when you change the output.
Good luck with Windows version.
-vel