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Recommended shielding

Posted by M3 lover (A) on March 9, 2025 at 08:25:46

I need some basic guidance.

My new integrated amp has a background buzz with all inputs. Level is volume setting dependent. It seems to be a higher pitch than a 60 cycle ground hum.

I traced it to the outboard power supply for my outboard phono stage. That was initially located on the shelf below the integrated in my equipment rack. Moving the PS out of the rack to the floor behind diminished the buzz but did not eliminate it. It's not convenient to move the PS further away so I assume additional shielding is the answer.

Now, are some metals better for shielding than others? One that is easily bendable is preferred. I've not tried aluminum foil but doubt that may help much.

So recommendations before I go shopping will be appreciated.

"The secret of life is honesty and fair dealing, if you can fake that you've got it made." Groucho

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