When daphile uses its player it is attached physically to the dac. In that case you have sox and buffer settings under settings->audio devices. Right now I have nothing other than "no compatible audio devices" and an info tab indicating "Kernel audio driver parameters " and "Module: snd_pcm" -see pic below. This normally is what it reports when acting as server only.
I will play around with it some more. I can look in the log in daphile, and can navigate to daphile's ram as well and look. You can argue that whatever player is playing, it buffers anyway and whether play from ram even makes a difference - that is a whole other discussion though. Finally, when playing from ram in daphile , it will indicate "processed by sox" on the info when double tapping on now playing song. Will also try the play-from-ram button in Daphile just for fun/ diagnostics —more later. 😊
With regards to the question on why not just use Daphile - that was my setup before. I had a server/player setup with two LMS/Daphile installations , but I like the way SO sounds and would like to use it as player to the DAC.