That's actually what I've been doing. I have several music apps that have options that let you select either DOP or PCM. So I'm listening to the exact same mastered track and just changing the way it's converted. I hear a difference in output, but again, I can't say one is better or worse. Just to clarify, I tend to agree that outputting in the same format to which it was encoded/mastered almost always sounds better. And in general, more conversions degrade the sound.