Recommendations for a integrated amp

I literally posted something very similar a couple of months ago. I ended up buying a used Muzishare R100 300B 805. I got a GREAT deal from someone close by who bought it because he was curious and wanted to compare to his much more expensive equipment.  He was very impressed and it punches above its weight class considering the price. I love it.  My first tube amp.  I’m digging the clarity of the 300 B tubes. 
If I didn’t find the Muzishare deal I was very close to buying a Cayin Jazz 100. You should also check out Aric Audio. Best of luck. 
 

Late getting to this chain and surprised no one has mentioned Lyngdorf.  I bought a TDAI 2170 for my family room system, bc of the one box solution and built in processer (the room set-up is asymmetrical, furniture, etc....) but that's not where I'm going....when I compared it to my main/basement system (bel canto 3.7dac, SF Line 1, two Gold Note PA-10 amps in mono or BAT VK56), it performed equal to and in some respects better.  Some might say duh, vintagey vs STOA, but nevertheless I imagine the 3400 would suit your needs splendidly.  Can't say how it'd compare to Luxman or Krell which have much more of a following, but something to consider esp if you might benefit from digital processing for room adjustment and option of several different sounding set-ups.

btw paired with Sonus Faber Concertina 1s.  $500 used.  Haven't found stand mounts I enjoy more in the $2000 or less budget.  Wish I had the funds to compare to the new IVs but...  I bought the Lyngdorf with long term speaker upgrade in mind, but other audio priorities for now.

Thank you again for the recommendations. Since this is a hi res audio using Tidal, many mention the Hegel H390 and that is better in terms of sound and a better built in DAC. However, keeping it at 4k, would a Hegel H190 and a DAC/streamer be still better than a Hegel H390 alone?