Entry Level Tube Integrated Amps

I recently purchased a Willsenton R8 then proceeded to “roll” tubes to tweak the sound to my liking.

Fantastic amp, really good staging and dynamics and a perfect entry into tubes.

ROON / Tidal

Auralic Aries S1

Chord Mscaler

Chord Hugo TT2

Willsenton R8

Quad Revela 1 Bookshelf’s 

I found that vintage Dynaco amps are very affordable when wetting your beak on tube amps. I've also tried a Prima Luna integrated amp and really liked that too.

Tubes are fun, rolling them can turn into an obsession.   Great advice already, if you can, identify the sound signature you are after.  It can vary depending on design.  Some designs lean into tube magic, bloom.  Other designs focus on bridging the gap between SS and Tube amplification often leading to Tube amps that sound more like SS amps with a touch of Tube magic.  If you are new to tubes if you can find a unit with auto bias / bad tub indicators it will ease you into the maintenance of keeping Tube amps running, sounding there best a bit easier. 

I think a PrimaLuna EVO 100 Integrated is a great starting point. 
 

Very good quality and built like a tank. It’s also easy to tube roll.

Vincent Audio has 2 models below $1000, look for B stock or open box. Not very tubey sound but that was just my ears, my speakers.

You could also get a preamp with tubes, my favorite pairing is tube preamp, SS amp.