Recommendations for a tubed preamp

As you are in Europe I would look into the well reviewed Icon Audio LA4 Mk III.

https://iconaudio.com/pure-valve-line-pre-amplifier-la4-mkiii

I heard the top-of-the-line Allnic tube preamp on my system which has a CODA #16 amp in the mix. This thing cost $33k and for the first time I found a preamp I liked better than the dead neutral Benchmark LA4 preamp. 

I did some research on the designer, and he seems like a bit of a genius. I cannot afford the Allnic preamp and I am very happy with the Benchmark.

The reason I mentioned this expensive preamp is that this company has other lower end models and I see them listed on USAudiomart in the price range requested. 

One thing I am looking for with Allnic products are ones that have OTL/OCL design. I hope to get a DAC from them with this design. Phenomenal detail and beautiful holographic sound. I would not be interested if the detail was missing. 

Schiit Freya +. Somewhat too inexpensive for those who haven't heard one of these, but it is still a "Class A" (Stereophile) preamp. I've had an original version with NOS GE tubes for years. All the preamp one could need.

I could highly recommend Primaluna, owned Prologue Premium preamp and then upgraded to EVO 400. EVO 400 has balanced ins/outs, and very low output impendence so easy much with most power amps. Sound is not too tubey, it leans a bit more to modern sound compared to some other, so detailed and extended, but smooth and full bodied, you can even say slightly warm. Perfect combination :) Simplified setup now to Primaluna integrated, but still sticking with the same brand. Good support and sales network in EU. 

+1@skids

I own an ARC Reference 5SE.  Best I have owned.  Just sounds like pure music.