ckr1969,
It's hard for me to believe that both amos would have been damaged in the same way to cause both to be buzzing that's more of a quality control issue, I majored in electronics in trade school and I was a CATV technician in case you don't know what CATV is it's cable television and I think you should reread the review again because the reviewer said at times the buzzing was quite noticeable, how is that a superb sounding amp? that would be extremely annoying trying to listen to music with buzzing coming through the speakers are you really that stupid to try and convince yourself that the amps sounded good when there was buzzing going on in them? are you really that stupid? Good luck trying to get them serviced if yours start buzzing, I wonder how long you'll be waiting to get them back when they have to go back to Germany to be serviced.LOL

