Its not. I didn't think about that. I called my dealer, and he said to break it in for 100 hours.
New Rotel RA-1570 seems to display the highs
I'm not sure if this is the way amp seems to play music. It just seems the highs are very pronounced, a little too much in my opinion. IT's a great amp in way that I hear parts of music I never new existed. I'm not sure if I have too much "amp" and maybe I could with the model below.