Which preamp for a pass labs?

I would suggest Pass  either an xp10 or 20 would be a perfect match. As for cables I am using these and they are excellent regardless of price.

https://www.dysonaudio.com/collections/facemelters

Enjoy the music
Chuck 

tank's czbbcl

Neither?

Conrad Johnson.

Sorry, I find the entire current Pass line as way too flat and colorless. If you are going with an amp, I might strongly encourage you to look elsewhere for a pre, unless you were a big fan of the old AR house sound, in which case Pass or old AR makes sense.

Best,

E

mizioa you are most welcome and glad I could help. 

Chuck 

Nothing wrong with an XP10, but I've compared it with others and found it expensive for what it is.  I also like the LS25 MkII,  In Solid State you might look at a T+A Elektroakustik,  used they will fall in the price range of the others.