Well, I listened for about an hour after the unit warmed up for about 30 min with the D5's. I have Soulutions, Accuphase, Constellation, and Pass Labs in my shop. The NuVista does not sound like any of the above. It does not sound like any integrated that I have ever heard. It plays with great slam and attack. The midrange is incredibly smooth and natural. Everything seems to stay in control, although the bass is a touch heavy at the moment. The tone is so smooth and natural, that I do not have anything to compare it to. I need more ears in my shop to help explain what I am hearing