Pass Labs Preamps with tube amps?

Normally a SS amp then a good tube preamp 

check out Linear Tube Audio they make a excellent tube preamp 

with 6sn7 , plus additional tubes you can use , if xlr you can get too theLundahl C core transformer option  , exceptionally well made David Bearning helped design 

and today improved better still.

I had XP12 paired with Rogue ST100 and it was a good combo. The Rogue amp was a bottleneck but not because it’s tubes.
I run XP22 with X260.8 mono amps now and the synergy is great and I do not miss tubes.
As to the comments above claiming Pass preamps fail, I disagree. I had an Audio Research Ref 6 for over 3 weeks in my system and did plenty of A/B with the XP22 and ended up actually preferring the Pass preamp. I’m a fan of ARC and owned several of their preamps over time. But to my ears in my current system the XP22 is a better choice.

+1 @ghdprentice 

I have owned XP-30 and XP-32 preamps feeding into a very good set of SET hybrid monoblock, not quite satisfactory.  IMO Pass is an excellent amplifier company comparable in their price range, and make just alright preamplifiers.  Again YMMV.

Have an XP-32 and it is excellent.  My friend had an XP22 but I always felt, although a bit more dynamic, it was lacking in naturalness and palpability.  Thx XP32 is in a different category form everything under it.  He ended up selling his 22 for a Coda pre.  He seems happy with that for now.  

Thanks everyone... I've decided to stick to my original plan and get a good tube preamp, and then hookup my SET amps, and get a Pass XA25 for solid state. 

I chose the McIntosh C22 MKIV for couple reasons, mainly: 
* has a tubed MM/MC phono stage (I play vinyl about 30% of time so the C22 should be 'good enough' especially with a tube roll). 
* has tone controls and loudness - I listen alot at lower volumes and it is nice to bump something a tad if I need to.