I have an opportunity too buy an AU 7500 amplifier for about 100 dollars US. Is that a good price. I understand that it is a very nice sounding amplifier.
I own three of these amps. I consider this model far superior to the previous series such as the 777,999 etc., and the AU9900. I think it is one of the best integrated amps period. I have not listened to a 517 or 717. Aloha!
