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In Reply to: Re: Are ferrite rings bad for power cords? posted by Fairbanks on April 21, 2007 at 15:53:37:
Ferrites such as the Audioquest ones do not have any effect at audio frequencies. They are only resistive in the MHz range.
The ill effects you attributed to the AQ supplied stoppers were "something else".
It is impossible for the AQ stoppers to create the sound qualities you described.
Follow Ups:
Anything with high magnetic permeability will interact with the audio-band magnetic fields. Unless the cable is perfectly coaxial, there will be some audio-band magnetic field outside the cable, where the ferrite device can interact with it. It remains to be demonstrated that the ferrite material is perfectly linear in the audio band before we should believe the assertion that it cannot affect the audio signal.
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As I said I don't have the answers.The changes I desribed were large not subtle.
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