From my own experience, Pass preamps overall fail to meet the characteristics of their excellent sold state amps. In general I have found the tube preamp paired with solid state amplification to be a much better match, as you have noted.
Pass Labs Preamps with tube amps?
I see plenty of search results for tube preamps with pass amps, but curious who’s experienced pass preamps (XP-10, 12, 20, 22) feeding low watt tube amps. Specifically SET amps, but any tube experiences would help.
I will be setting up two amps to swap between. a low watt SET amp and a solid state. My main amp listening being SET tube amp.