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Need suggestions please! Electrical noise in my system and it's driving me crazy!

So I have been battling with an electrical noise in my home since I moved in over a year ago. I've had two electricians check it out and have done hours of trouble shooting myself. 

I'm getting a hum or a buzz from anything with a transformer and a buzz through my speakers. Standard driver speakers and my Maggies. The house was built ten years ago and has everything up to code. Underground electrical lines. 2 ground rods outside the house. Just added a ground to all the copper plumbing and gas lines. I have a 200 amp panel in the house and a 100 amp panel in the garage. 

I have a Furman IT Reference 15 power conditioner and it's not doing jack. It's actually humming too. As far as trouble shooting I've mixed and matched equipment, speaker, and cables to eliminate that factor, I've also turned every breaker off one by one to find if it's something in the house that's dirtying up the electrical but even when I only had the one breaker that powered me system on, the noise was still there. 

I'm going crazy because my relaxing time is sitting and listening to my music in a dead silent room with a dead silent background and I no longer have that anymore. I can hear the buz, hum, and even a high pitch noise and it's ruining my hobby. Both electricians I've had in the house have no clue and and think I'm nuts anyway. 

Has anyone had an issue like this before? Could you fix it? How did you fix it? Please help! I'm about ready to sell all my equipment because it's annoying to listen to. 

Thanks,
Brian
gearheadmac
gearheadmac OP
5 posts
 
I've already turned all the circuits off in the house. I eve did it one by one to see if I could pinpoint the issue circuit. Only thing I gained by doing that is I made a diagram of which breaker is hooked up to what in the house. 

I'm not sure what you mean by number 2?
erik_squires
16,377 posts
 
Well, if no house circuit helped, that sucks. One of your power conditioners has balanced outputs, right? I just don't know how many.

Are all the outlets balanced? If not, move everything over to the one's that are.

Listen again.

E
erik_squires
16,377 posts
 
You don't by any chance have multiple ground rods placed far apart?
Post removed 
normie57
50 posts
 
My home seems to be prone to dirty AC, in the past causing variable and intermittent hum/buzz through my loudspeakers.  I have dedicated 20A lines to my listening room and have tried many line conditioners over 20 years. What proved a near revelation for me, about 3 years ago and still proudly standing, is the Torus AVR 20 balanced line conditioner. It required an electrician (in my case) installing a 240V Balanced AC line to my listening room, but all my upstream electrical issues seemingly vanished without more time consuming, expensive, and potentially nerve racking whole home diagnostics and solutions. My highest recommendation!
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