Krell 400xi vs NAD M3 vs Music Fidelity A5 vs Naim

I own a Krell 400xi and Plinius 8150. I like both of them but I do agree with Krelldog, A Plinius 8150 or 9200 gives you a great tube-like sound and is big bang for the buck. I have not heard the amps you mentioned or the Blue Circle.

I meant to say Plinius 8150, 8200 or 9200.

I've just bought a used MF A5 on here and all I can say is "wow" when it's paired with my B&W N805. A big improvement over my soon to be on sale MF A3.2 integrated amp.

NAD M3 Rules !!! I have had the Krell 300 and 400 series driving the Krell Resolution 3 Monitors ( which btw are so good I bought a second pair for the downstairs system). The M3 is far more musical, involving, and smooth. The Krells sound like industrial mechanical beasts in contrast. Forward as one post said is a bit of an understatement - in you face/skull is more like it. M3 has great pacing, rhythm, staging, and thereness that the Krell sorely lack. The build quality on the M3 is oustanding despite comments to the contrary - cheap build ? hardly !!! Have owned the spectrum of highend arc, rowland, krell, et al do not let the low brow bargain past positioning of NAD color your choice they are a serious player ready to compete with the giants at a less than giant price premium. This is the BEST BARGAIN IN 2 CH today.....

You won't know which integrated will provide the sound you want until you have it connected to your NHT's for a week or so. Beyond that, everyone's opinion is not relevant unless they have the same gear you have, with your cables, room and quality of electricity. You're going to have to gamble, try one of the integrateds and if it does not synergize well and make the NHT's sing, you'll have to sell it here and try the next one. If you can audition the integrateds first that's ideal, but I'm sure you're buying used and that's not possible with used gear. It can be a long process finding the right integrated to get the best from a pair of speakers. I previously owned the NAD M3 and was able to audition the Krell integraed in my home with my speakers. I have owned at least 6 high end integrateds and that's my point of reference to your situation. It's hard, but try to be patient. Good luck.