The first version of the Magnums sounded like more resolving 325is, but later versions are more like the old PS1, so better all-rounders.
The last rig of this type I used was an AK100 and Pico Power, and again just recently the FiiO X5 and Pico Power, though I haven't yet tested how much the latter improves the sound, if at all.
I just heard of the Fiio X5, do you like it?
So far, I do. It's a bit on the warm and forgiving side, but I like that, especially in combination with the nothing-but-the-facts Pico Power.