I am using an ear cleaning spray to clean the filters : I first remove the filters with a noddle, then put some cleaning liquid from the spray in a recipient and leave the filters in the liquid for some time (usually a night, but I guess a shorter time would work as well). The day after, the filters may be reused.
I have to change filters every 2 or 3 weeks, so this method was for me the only economically viable way to own jays earphones. I haven't noticed any degradation in the sound since I use this method (about 1 year).
Hope this helps,
Bruno
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