Earbuds vary a bit. You can get the ones for babies which are excluding vat so are cheaper. They have I believe the same cotton bud on them as the others, so are suitable for cleaning ears gently. Once I did lose the cotton bit in my ear and had to get a doctor to extract. My hearing, until extraction, was I suppose of less quality than usual. Maybe lost a bit of midrange. There is possibly a tip there - if your system has too much midrange, just lose a cotton earbud down your ears. Cost would only be a few pence, if that. Also, if room correction is an issue, just try one earbud at a time.