Experience with the Pass Labs XP-15 phono stage?

Thanks for your comments, Darkj...I agree system matching is always going to be a significant issue. My preamp is a Ref 5, just upgraded to the 5SE. Impatiently waiting for it to break in.

Does anyone know of changes that were made to the XP-15 mid production?
It appears the Gain options changed along the way from
40,46,71,76 to 46,56,66,76. I can’t seem to find anything
on this. Thanks

Why don't you reach out to Pass and ask them?  Interesting if true.  I picked one up second hand recently and downloaded the manual from their web site which says 46, 56, 66, and 76.

Thanks Big, but thier spec sheet on line says different.  
I'm looking at a used unit here in Canada and trying to figure what's real. 
Also trying to figure are the balance outputs offering the three gain settings of 
56,66,76. I see on the XP17 the Balanced and Single line outputs are different
gain values. 😎

This will be my first external Phono stage so I don't know what to expect. 
The stage in my Mcintosh can't be that bad but the flexibility with an external
will be nice. Want to switch to a low output Grado with .5-1.0 mv.  
This Pass XP15 should be the ticket. 👍