this post was submitted on 15 Mar 2026
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Hacker News.

A landmark international study across five Central European countries has found hazardous chemicals in every single pair of headphones analysed, from premium models to cheap imports. Authors say the results reveal a systemic failure in consumer safety regulation across the electronics industry. The investigation, conducted as part of the EU-funded ToxFree LIFE for All project, analysed 180 samples of hard and soft plastic components from 81 headphone products marketed to children, teenagers, and adults in the Czech Republic, Slovakia, Hungary, Slovenia, and Austria.

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[–] dellhiver@sh.itjust.works 3 points 36 minutes ago

Link to the pdf itself

Product list starts on page 37.

[–] FireWire400@lemmy.world 8 points 1 hour ago* (last edited 1 hour ago)

Reading through the study, not all samples contained unsafe levels of those chemicals. It's interesting to note how many brand-name over-ear and in-ear headphones do, though, including products by Apple, Bose, Samsung and Sony.

Unfortunately, none of the headphones I own were on the list. The only IEMs they test are the KZ EDX, which do ok.

[–] MonkderVierte@lemmy.zip 1 points 38 minutes ago

Btw, the silicone caps of in-ears are safe? Silicone is inert...

[–] maudelix@lemmy.world 1 points 42 minutes ago* (last edited 41 minutes ago)

Dang, the Bose QC are marked red. I use them daily as they are comfortable. Seems like most over the head headphones get hit hard.

[–] MonkderVierte@lemmy.zip -1 points 33 minutes ago* (last edited 31 minutes ago)

Researchers discovered that nearly all headphones contain bisphenols, chemicals known to interfere with hormones.

Lol, that's harmless compared to cosmetica.