Charles Hansen of Ayre Acoustics has been on record (see an Audio Asylum thread but other comments are out there) that he believes ferrite chokes screw up system sonic performance and that the audio industry has been moving away from ferrite chokes in recent years as their drawbacks become apparent. Hansen didn't specify where in the system chokes were objectionable.
He has also stated that the chokes performance degrades with age as the chokes absorb radiation, which they apparently don't discharge.
Obviously, Hansen is a prominent sound engineer. Do you agree or disagree with his criticisms of ferrites? Do they indeed store radiation the longer they are in the sound chain?