Hi Robert,
You have received numerous good amplifier recommendations. I believe that a good quality push-pull tube amp would be an excellent sounding option for your audio system. However I do acknowledge your reservation regarding tubes. Keep in mind that the Pass Lab XA30.5 and.8 are a full 30 watts of class A power into an 8 ohm impedance.
When these amplifiers cross over into class B (A/B) you’ll have much more available power into 4 and 8 ohm impedance loads. IMO, in your 13x14’ room you’ll probably remain in class A operation the “vast “ majority of the time. Your speakers aren’t difficult impedance load challenges for amplifiers.
Best wishes,
Charles