We did have a slight noise problem when the AC voltage was above 220V. We have extensivly redesigned the main power supply board and now there is no longer a noise issue even at 240V.
And my amp has been fixed, finally! I thank Phil and Freda and the guys that they actually did take the time to find this problem and fix it, even if it took a while!
Now it's a GREAT amp! Wouldn't trade it for anything!
D.Don