Recommendations for a integrated amp

+1 on a Krell K300i with the digital board. The integrated amp sounds great and the DAC is great too.   Loads of class A power (90W at 8ohms, doubles in 4 and doubles again in 2).  Elegant, refined, and powerful.   You can routinely find them about $4k used.

I have one and love it.   I also have a NAD M33 Masters Integrated and that’s not bad either and those can be found at $3k used.

I am on the fence about NAD, but would listen to it, try it out. I like simple like Musical Fidelity, Creek, Belles, etc.

I really like the convenience of Hegel H190v. How would you describe it sound? I like a more analytical and neutral sounding with a slight edge on the warm side. 

If I was you I’d go for the H390 as it’s a better sounding amp and has a much better DAC than the H190, so considering both those things in your situation I think the H390 is very worth paying up for and can be found used right around the top of your budget.  I also think it will provide significant improvements over your current separates.  Here’s a good review that may give you a better idea of its sound characteristics in case you haven’t seen it.  Hope this helps, and best of luck. 
 

https://www.soundstagehifi.com/index.php/equipment-reviews/1365-hegel-music-systems-h390-integrated-amplifier-dac

+1 @soix 

The Hegel H190v is a fine choice if buying new, TAS gave it a positive review here, but the H390 is a significant sonic step upwards and the internal DAC is very good. 

Used NAD M33. Has everything…Purifi amp, streaming DAC, room correction.