Krell K-300i vs. other integrated amps under 10k

@ei001h, Based on my experience with the Luxman 590ax II Class A amp, my Hypex NCore NC400 Dual Mono Class D Power Amplifiers, my Mola Mola Kaluga Class D Mono Power Amplifiers (very disappointing), my SimAudio 700i V2 amp and my current Ayre X-5 Twenty amp, every amplifier has a different sound depending on it, the associated equipment, the source, music and your listening room. The only way to know what sounds great, is to listen using your components in your home. Obviously, I made some mistakes but, more important, I learned what sound I like and did not like.   

My friend said “my progression of gear were not expensive mistakes but rather a 'wonderful' learning experience.  It was an experience that only I could have in my home”.

I like my new Ayre AX-5 Twenty integrated amp very much.  The sound is different in that the sound is MORE natural and less 'exaggerated' than my previous amps. This is very hard to put into words. The sound is there with no artificial extra stuff around it.  The music is normal meaning it makes music, never adding color or stripping the musical recordings of their textures, feelings, and dynamics.  The music from the AX-5 Twenty amp is relaxed and smooth without sounding dark or laid-back. I hope this helps.

I've only had 1 krell product the kav 300il integrated and I loved it. The unit did run hot though and went in for service several times under warranty to get the amp repaired. Once the warranty was up and the amp baked itself again I used it as a preamp for several years. 

I've been rebuilding my system since 2015 and all I know for sure is the speaker/amp combo really can't be judged separately because both influence each other enough (at these prices) to affect results. I could offer some examples, but I'm sure you guys already have had similar experiences. 

I’ve never head the newer Krell intergated, but you mentioned the Hegal 390 and for the money it is a very impressive sounding amp. In my system, lush mids and very good bass. Very smooth as well. I also have a Pass integrated 250, Accuphase 380, Mac 352, and the Hegal is not embarrassed by any of them. Might check it as It is much cheaper than the Krell.