Personally think IPC, after all, is a player, at least to save your phone power...
The a200p should sound better than the IPC (wm8740 for dac), but it's just a dac.
But to be honest, still look at the format of your song, listen to mp3 words can not hear much difference, the difference is still quite big.
PS:Fiio x3 also uses this dac, the price is cheap, just like... But support domestic products