Review on 🔇 Ogrmar EMI RFI Noise Filter Clip - Suppress Cable Noise for USB/Audio/Video Cables - Set of 20 - Black by Nathan Byard

There was hum in one channel of Marantz direct drive turntable. Fed a rebuilt 2325. They've eliminated the hum completely. Interestingly, I had to unplug the ground wire from the turntable to the receiver to completely eliminate the hum. Reversing non-polarized power supplies didn't help, so I bought these ferrite noise filters. My problem has been solved and I have a lifetime supply for future problems!