2. amps-preamps
  3. 1044505688

Amp hums when on same circuit as line conditioner

I have a Classe ca-200 which has never hummed before, but I just put a furman voltage regulator/line conditioner in my system, and if the amp is connected into the line conditioner or other socket that the line conditioner is plugged into, the amp hums (the transformer i'm assuming). If the amp is plugged into a different socket(on the other side of the room) and everything else is the same, it does not hum. I've tried all sorts of combinations, and the only way to get rid of the hum is to turn off the line conditioner or to plug the amp in a socket elsewhere. Any clues as to why this is happening?

Jon
crzyjt

Showing 1 response by bob_bundus

bob_bundus
1,834 posts
 
whatever you do, do not install any type of GFI protector. These are the 2nd worst noise producers around, aside from many cheap light dimmers.
Having no connection to earth ground is a likely cause of the symptoms however.
More to discover