This may be a ridiculous question but I would appreciate some insight on this. In this observation I used the DVD movie "Miami Vice". If an AV receiver has the same specifications as another receiver, what in the receiver specifications determines the clarity of the dialogue. The reason I ask this is that when listening to a AV Harmon Kardon receiver at Fry`s utilizing the same speaker set-up(Polk monitor series) the dialogue was much clearer than my Yamaha. I did notice that the power output on the Harmon was about 25% greater than my 100 Watt per channel Yamaha. Can the additional wattage make much of a difference or is the Fry`s receiver much better. What would make it better? I would also mention that the Fry`s receiver was priced at several hundred dollars more than the Yamaha. Thanks for any advice.