Are all these discussions about ferrites and filters intended to cast light on the question of this thread? Because if they are, they are (IMO) promoting (or at best as I have pointed out above muddying the waters with FUD) the snake oil cables this thread was created to debunk, and which have absolutely no influence on the audio quality out of a device whether due to RFI or anything else.
If not, they are off topic, and should probably be taken elsewhere.
If not, they are off topic, and should probably be taken elsewhere.