several years ago i bought a tube phono preamp and it sounded so good that it was my gateway entry into tube amplification.
i started with a tube integrated, then bought another, then went to tube preamp and amplifier and then tube preamp and a few solid state amplifier. i experienced the best sound when i used a tube preamp and tube amp followed by a tube integrated amplifier. i switched to a tube preamp and solid state amplifier in order to increase the power and dynamics to my speakers and should have left well enough alone. with your speakers full tube amplification from a robust integrated amp will be plenty.
my first integrated was a raven audio blackhawk and it sounded spectacular- great open, refined transparent sound and enormous sound stage.
i then moved to a rogue audio cronus magnum ii that sounded nearly as good but had more oomph and dynamics.
now i am running tube preamp and solid state power amp that is 3X the price of my rogue cronus magnum but added a much smaller percentage of sonic upgrade.
in hindsight the cronus magnum ii is all i needed for spectacular, muscular, refined transparent sound and aforementioned sound stage. the new cronus magnum iii are shipping and are highly recommended.