You’re thinking like I was before I started experimenting with new DACs and new server streamers.
Your phone is the weak link in the chain. The Ps Audio is an ok DAC. I’ve heard it sound great in $250k systems. Getting a quality server streamer or just streamer will get you much more bang for the buck. I tested 4 new server streamers and 4 new DACs when I wanted to upgrade and found the former made a much bigger difference.