FWIW, on my Threshold FET nine/e preamp, circa 1992, the phono inputs use ferrite chokes. They are on the wires inside of the case, between the RCA jacks and the circuit board.
Ferrite beads/clamps as a tweak?
I've been reading that ferrite clamps can reduce RFI/noise on just about any cable - power cord, video RF cable, IC, etc.
Can they also hurt the sound? Why wouldn't you want these things on every IC, power cord, video cable, and so on - even household appliance cords like the fridge etc? Do they reduce RFI leaving the appliance or just entering the device?
It seems like putting these things all over the house would do a great deal to reduce noise. I don't have any specific interference problem except with cable and FM reception. Seems like an obvious idea for cheap system tweak.
Can they also hurt the sound? Why wouldn't you want these things on every IC, power cord, video cable, and so on - even household appliance cords like the fridge etc? Do they reduce RFI leaving the appliance or just entering the device?
It seems like putting these things all over the house would do a great deal to reduce noise. I don't have any specific interference problem except with cable and FM reception. Seems like an obvious idea for cheap system tweak.