I had 4 Boze 901s with a quad turntable 40 yrs ago, so I have heard it all. Just got an Onkyo RZ800. Have vaulted ceilings so, I just connecting to existing 7.1 speakers and UNREAL!!!! Greatest sounding system I have ever had. So much clearer and the sound literally surrounds you. I don't get that you ndividual speaker effect anymore. Suicide squad, Fifth Element, and The Wall would make you drop what your doing right now and get it, lol. I'm an old musician so even with my hearing, or lack of, the difference is astounding. I upgraded from an Onkyo receiver with the same power rating, 135 / ch. I might try some higher speakers.