It is a PCM compressed Wav. file when it is M4a, as I told you above.
It is not that I don't like the sound of DSD. The problem is it is no better then PCM no matter what audiophools, idiots, or what ever you want to call them say.
The problem with DSD is it is just a nightmare, and an absolute PITA to work with. So nobody will work with it anymore. So as sop to idiots, they convert DSD to PCM to organize it, and then convert it back to DSD, to keep the dumb idiots happy. Whereas they would have been better using PCM the whole time. That is just plain fact. We have no need of DSD, it brings no advantages, only obstacles, and is just a nuisance. You can tell it is dying out thank goodness, but its death is far too slow.
In your case I suspect you thought you were listening to DSD. Well you were not!