Ear plugs have become a festival must-have - but they aren't all created equal

Earplugs with noise-filtering technology allow concertgoers to enjoy live music at reduced volume levels. Products marketed for this purpose range in price from under $10 to over $200, with varying designs and noise reduction ratings. The devices typically preserve mid and high-frequency sounds associated with music while reducing overall decibel exposure. Consumer Reports and audio equipment retailers have noted increased sales of filtered earplugs at music festivals over the past two years.

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