pass xa100.5 with arc ref 3 ?

Any experience with this combination? I had read a few posts raising concerns about output of tube preamps with the pass monos.
Anyone with experience listening to these two? small-medium sized room with wison benesch ACT speakers.
I used a Ref 3 (650 hours on the tubes) with Pass Labs XA-60.5 (and Silverline Sonata III loudspeakers), and the result was uninspiring.