Yes. Suggest you start another thread in the TT/TA forum.
It is likely a ground-loop of some sort rather than 'motor noise'. Ground loops can be a pita with a TT/TA and phono-preamp. Is there a 3rd wire from your DF-52F to the Yamaha integrated amp? If so, that is the ground wire and there is a place for it near the RCA inputs for the phono-stage. Try with it connected and try without it connected. May solve your problem. Which Yamaha? I may have some literature for same.
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Glenn...
Canton Reference 9 Clearaudio SM Pro Focal Bathys JLA 10" Dominion Kuzma Stabi S w/MC & MM Magnepan 1,7i McIntosh MA8950 & MR88 Oppo 203 Roon Nucleus Rose Hifi RS150B Shunyata Gemini-4 Sony ST-A6B, TA-F6B, ST-J75 & PS-X75 Sorane SA1.2 & TA-1L Stillpoints LP1v2 WW Pt, Au & Ag
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