@funthings
...The XA-25 has good warmth, and I have a Primaluna EVO 300 preamp that I can use if I need some more.
A few friends did fairly extensive paring of the Pass XA-25 amp with various tube preamplifiers, and found the combo to work really well in many cases. Hey, your PL EVO preamp with select 12AU7 input tubes to fine tune with the Forte IIIs could work out nicely as an option to consider. I’d try that first! :)