Noises and crackling when connect on Stereo Equipment

Hey,
I have some Noises And Crackling when i Connect my IMac on my stereo Eqipment.
Sounds like there is an grounding problem?
Can someone help me please:-)
Greetz Matze

Hi Phatty79 ,
I hope your having a good day. I use to have a similar issue. What I did, was I plugged all my stereo equipment and my iMac into the same surge protector. Have you tried that?

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