Anyone running a tube preamp with a Pass XA25?

I know this is an older thread but I am also an XA-25 owner and considering some different options for preampfification. I have a Schiit Freya + with stock tubes. I like the combination but I have a nagging suspicion I’m not maxing out the potential of the pass. However I want to keep costs realistic and avoid spending more on the pre than the power amp. Remote controls are important too. 
 

Any recommendations on matching/synergy? So far contenders are: 

Rogue RH5, RP5

Vintage ARC or Conrad Johnson tube pre 

Luminous Axiom II passive pre 

Appreciate any first hand experience and recommendations! 

@poketacez I would add Cary SLP98 to your list. The combination of the Cary with some Svlvania 6SN7s and Pass XA25 sounds great. I much prefered it to the Rogue RP-5 with the Pass in my system. 

Used SLP98s can be easily found for less than 2k

That said, is there anything specific you are looking to improve in your system's  sound?

@knik thank you for the response. I have had my eyes on a Cary for a while as a possibility. I currently have the Schiit Freya and I’m thinking although it’s nice and adds some flavors (passive, gain stage and tube) it doesn’t really sound like tubes and I’m thinking I could do better. I’ll keep an eye out for a used Cary! Thanks a lot 

Check out Aric Audio. He has 6sn7 tube preamps at several price points.  There is one used up for sale here on AG.