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IFi Zen 3 phono Humming Sound

Kiru

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Joined
Apr 23, 2026
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Hi , I am getting a humming buzzing sound in IFi Zen Phono 3 preamplifier when using a 4.4mm balanced to Dual XLR male cable to connect to Fosi Audio ZP3, I bought a Art DTI Dual transformer isolator, but still getting the freaking buzzing/humming.
I tried to take out the grounding from my turntable that was attached to IFi zen 3 and fixed it at the grounding lugs of the isolater, the humming reduced almost 70% but the annoying humm is still there when I crank up the volume.

Fyi, my turntable is from Sony PS-HX500 to IFi Zen 3 phono preamp to Fosi Audio ZP3 to Fosi Audio ZA3 mono 2 blocks setup with 10A power bricks for each amp. I also running All of it with a power filter/conditioner.

Please help.

Regards,
Kiru
 
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