Gena, the key word is "should." Just because it "should" doesn't means that it "does." And I was comparing the 7500 to the 7125, not the Yamaha (I was refering to loudness alone when I mentioned my old receiver).
You're right, there may be improvements made to the 7500 from the 7125 other than more power. However, the initial inquiry that started this thread was whether the 7500 sounded better with the M80v2's than the 7125. My experience, having had both amps in the house hooked up to the same M80v2's, was that the 7500 that I now own did indeed sound better than the 7125 that I used to own with those speakers. IMHO. Whether or not that makes sense scientifically, I can't say.
I also realize that "good sound" is a very subjective thing. As a friend of mine often says, "That's why they make chocolate and vanilla." What tastes better depends on who is doing the tasteing. How's that for being philisophical?
Regards.
