I tested a Krell 400xi vs an NAD M3 and it was no contest - the NAD M3 was in an entirely different league. The 400xi had an odd, industrial sound. Excellent recordings could sound very good on it, though. The NAD M3 made everything sound fantastic and three-dimensional and allowed me to just enjoy the music rather than analyze it. I also heard things in my music that I had not heard before when using the NAD M3.
My impression is that the 400xi is a "love it or hate it" kind of product - it will either work well with your sources, speakers and hifi tastes or it just won't. For me, its character is too harsh and analytical and it is not very musical. I think there are better choices.
My impression is that the 400xi is a "love it or hate it" kind of product - it will either work well with your sources, speakers and hifi tastes or it just won't. For me, its character is too harsh and analytical and it is not very musical. I think there are better choices.