I am looking at a couple Adcom amps and need a quick education. Other than rated power, are there sonic differences between the GFA-535 and 545? I seem to recall some saying that the 545 was not as refined as the 535.
What is the difference between the GFA-535 and GFA-535 II? Is one more desirable?
Also, is an NAD pre-amp a good combo with the Adcoms?