Stephen,
Thanks for your latest listening impression of your evolving audio system, your posts/comments are always interesting and fun to read. I would not be surprised if our listening preferences overlapped in the range of 80 % or so. . The other 20 % we 'd make different choices (variety is the spice of life). In my experience solid state (SS) preamps 'generally' sound drier, less tactile and 2 dimensional compared to the very good category/level of tube preamps (For certain not every tube preamp is a good one).
I am fully aware that there are exceptions to my generalizatons. For example I have always been intrigued by the SS Robert Koda preamp. I strongly suspect that I'd find it truly excellent. Your Pass SP 22 and S.I.T.-3 pairing could easily be another exception. I have no doubt that your current audio system sounds fantastic! I'm glad it is providing you such music listening joy.
Charles