The P is a warmer sounding preamp with slightly less overall bass control. The X 2.5 will offers better frequency extremes, tighter bass control, slightly faster, slightly more dynamic, with slightly more details. I would say that the 2.5 is more neutral and transparent too.
That being said it all comes down to what you are looking for in your system and how it mates with your amp of which I have no experinece with.
Happy Listening.
That being said it all comes down to what you are looking for in your system and how it mates with your amp of which I have no experinece with.
Happy Listening.