Integrated Tube Amp approx. $2,500

Allnic Integrated amps, a variety of pricing available, new or used.

This Quicksilver should fit the bill!

https://quicksilveraudio.com/products/integrated-amplifier/

Have a look at the Muzishare X7. I've had one for almost a year now, well built and sounds excellent. I had looked at the Willsenton but they had way too many issues, the X7 has been rock solid quality wise.

I would not look at any of the offshore offerings that do not have local service support in your market. Save your money and look at brands that have distribution and service support. 

@yogiboy  +1

I run the Quicksilver 20wpc integrated with a pair of vintage Klipsch Belles (104db @ 1 watt) and it's a very nice combination - I rarely have the volume knob past 10 o'clock.  Plus, Mike Sanders is a pleasure to deal with.  Both he and his company have been around for a while, so I would expect no dramas or future concerns.