Integrated amp for tube lover

We all have different preferences @hedwigstheme and how we feel depends on our preferences. Some like natural timbre and super detailed analytical presentation, some like natural timbre and warmer presentation that doesn’t emphasize or etch out the details. 
I feel Pass Labs gear and Boulder 866 integrated fall into the latter category while Coda CSIB walks a fine line between warm and very detailed/etched out. Pass and Boulder 866 will be closer to tube sound. All 3 have natural timbre. 

ModWright

Circle Labs 

I'll add the Rogue Audio Cronus Dark to you list to consider. Fully American made in Pennsylvania. Great support, and, most importantly, amazing sound for the money. Easily outperforms amps at double or triple the cost. I have eh Magnum II and plan to upgrade to the dark soon. It gives you 100 tube powered watts.

Luxman SQ-N150, much better buy than anything Rogue, probably won’t break either. Then there’s the Naim Nait 5Si which will give you anything a tube amp will and plenty of grunt too!

Another vote for the Dynthesis Titan A100. I had the A40 in my system for a long while and it had more than enough power to drive my audio note speakers. As stated above, the DAC is an exceptional deck as well.