Ferrite install on appliances AC cable

Ferrites are best for high frequency noise, including radio stations and other EMI/RFI.
Their best use is if you have wall warts, like for your network, or Class D amps. They are good on fluorescent lamps, but man, they can put out so much noise that it's only a slight improvement there.

Do not use on your system as they are bad for the dynamics and sound.

ebm5, Thats what someone told me, only install them on other than our music equipement 

I have ferrite clamps on everything not audio. I have an assortment of press closed capture type and plain long tubes 1" long abut 1/2 " outer diameter.. I can use the tubes on any zip cord. I fold the zip up into the tube and out, bending it over to fit around the other end between the entering and exiting wire. pull tight, wrap with Teflon plumber's tape. Two on each cord, one at each end. Lamps, air cleaners. refrigerator.  
Just to mention even $3000  audiophile powercords from Cardas have a ferrite device included in the design..

Until I put a Ferrite core on my antenna lead to my tuner, my tuner was unlistenable with my kitchen lights on. My kitchen lights are all LEDs and must be putting out a lot of junk.