Hi guys, I use a Karcher water filer vacuum at home. Although the website states the noise level is 66 db, my phone app measures at least 83 db. The thing is I use plugs n muff when using it but it still seems pretty loud especially with prolonged use. I know plugs n muff seem like an overkill but my T has been increasing over the years, with fluctuating H. So I guess I just want some opinion and reassurance that I am well covered, as I am having a sudden spike for the past few days. I use it once a week for an hour. Would like to hear your thoughts. Thanks.