I have been looking for amps for my system and finally found a couple, they arrived today. they are Adcom 555II's. They arrived well packaged and the condition is way above usual. I am going to do some mods on these. First thing I did was fire them up and check the MV across the speaker terminals. They are fine and were dead quiet when I fired them up. I am going to do all stages and the first is the PS. I will post as things progress.