Recommendation for amp
Harbeth P3 ESR SE
They’ve got an easy load, even for a tube. But don’t go big in loudness before distortion sets in, and only 83db so >50w/8ohm would be nice.
https://www.stereophile.com/images/archivesart/810Harfig1.jpg
This US made integrated would be ideal, also has headphone amp if you can stretch the budget a little more. And can be loaded up with dac and/or phono stage as well if needed.
https://www.schiit.com/products/ragnarok-1
Cheers George