If you do a search for "Capri" in the forum search you will find a thread about this exact comparison, with a lot of comments. I have used both the Capri and now use the XP10 in my system after trying a LOT of preamps (Adcom GFP 750, BAT 32, Aesthetix Calypso, Bel Canto Pre3). I ran all balanced. I liked the build quality and flexibility of the Capri, but in my system it just sounded dead, with less bass than the others. The Pass is another level--better soundstage, greater depth, more musical. Totally grain free. And Pass quality and reliability. I would think it would interface very well with your Pass amp. There is a review about the XP10 with the XA60.5 so I would think that would tell you a lot about the combo with your amp. It's posted on the PASS LABS website under reviews (was done in July of this year). But getting the preamp right is the hardest thing to do, in my opinion. It is the heart and soul of the system and has a huge effect in how everything interfaces in the system. You really have to buy one, try it out, and if it doesn't work then sell it and get something else. If you buy right (used, good condition, from a reliable seller), you won't be out much if anything. If you go the Pass route, I advise working with Mark at Reno Hifi. You would only be out shipping both ways for a 10 day trial. And you would get the factory warranty. Good luck!
