Pass Labs X1 vs. XP-10


I am looking to get one of these to go with my First Watt F5. Curious if anyone has heard both and cares to render thoughts on the two compared to each other. I have heard the X1 is more transparent, the XP more smooth and rich. Is this accurate? Is the X1 more detailed?
I have read the posts on this forum and can't find much to compare these two.
dbarger
I have not heard the XP-10 but if you can justify the cost, buy the XP-10. If you feel the cost does not justify the improvement, go with the X1. The X1 is a great preamp for the money. You would be hardpressed to find one better for the cost of a used X1. Pass made this pre for a long time so I would say they did something right with it. I am sure the XP-10 is better or they would still be offering the X1. On my budget, the X1 may be my last preamp.
Oh, I forgot one thing, I was reading that not too long ago, Nelson Pass was still using the X1 with the First Watt amps at the electronic shows. If you do some research online, it is not difficult to find this info.
i've owned an Aleph P and currently have the X1. recently listened to the X20 and really liked it. agree with the comments regarding slightly more detail (when the recording allows. i noticed this more on hi-res dvd's). also agree that it seemed a tad bit smoother up high as well. great pre-amp, but well out of my price range. i would have the guess the X10 is also a step in the right direction from the X1, but have never auditioned it myself.

Tzh21y is spot on regarding value imho. you'd be hard pressed trying to find a "better" pre-amp for the money spent on the X1. (used of course). i'll be staying with the X1 for a while. at least until i can budget a pre-owned X20. =)