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Listening at home⏱️ Estimated reading time: 10 min
On this page: Overview
Key Takeaways
Stand near the speaker stacks at a 105 dB gig and the NRR vs SNR earplugs question stops being academic. Regular gig-goers describe earplug shopping as a forced choice between damaging their hearing and hearing the whole set slightly muffled. The rating on the box decides how much of each you get, and the two rating systems behind those numbers do not speak the same language.
We are BOLLSEN, a hearing protection company trusted by 1,000,000+ people, and every pair of earplugs for music we sell in the UK carries an SNR value certified under EN 352-2. Our products are German-tested, independently certified 24 dB, and have featured in Mixmag and BBC Science Focus. NRR, the American counterpart, works to a different standard, and mixing the two up can cost you several decibels of planned protection.
SNR is the number that counts in the UK. Reading it correctly matters more than chasing the biggest figure on the shelf, especially once derating and fit enter the calculation.
What Is the Difference Between NRR and SNR?
NRR is the American rating, tested under ANSI S3.19, and SNR is the UK and EU rating, calculated under EN ISO 4869-2. In the UK, SNR is the number that counts: earplugs sold here as hearing protection are tested to EN 352-2 and carry an SNR plus H, M and L values for high, medium and low frequencies. Our guide to how NRR and SNR ratings are tested and why they do not convert exactly covers both standards in full.
At a gig, the gap between the two matters. The same earplug usually scores a few decibels higher on SNR, so reading an American NRR as if it were an SNR can misjudge your protection by up to 5 dB. At a 105 dB show that is the difference between roughly 81 dB and 86 dB at your ear, either side of the UK upper action value.
Music SoundPRO★ 4.8 · 514 reviews
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Life+★ 4.7 · 3,700 reviewsLife+★ 4.7 · 3,700 reviewsMusic SoundPRO★ 4.8 · 514 reviewsWatersafe+★ 4.8 · 684 reviewsLife+★ 4.7 · 3,700 reviewsWhy Is Real-World Protection Lower Than the Number on the Box?
Lab ratings assume a perfect, supervised fit, and a crowded, sweaty gig rarely delivers one. In the UK, HSE knocks about 4 dB off an earplug’s SNR to allow for real-world fit, while US advice derates NRR far more heavily, which is how a foam plug labelled NRR 33 can be credited with as little as 13 dB. Our guide to how much hearing protection you need for a given noise level walks through the HSE method step by step.
Fit is the variable you control. Our AR KI TECH measuring service sizes your earplugs from two photos of your ears, which is one reason our fitting-related return rate sits at 3 percent.
What Does SNR 24 dB Mean at a Concert?
SNR subtracts directly from the sound level around you, so at a 105 dB concert a pair of SNR 24 earplugs brings your estimated exposure to about 81 dB, under the 85 dB(A) upper action value that triggers mandatory hearing protection for UK workers.
Typical concert dB levels run from 100 to 115 dB(A), while the WHO Global Standard for Safe Listening Venues and Events asks venues to stay under 100 dB(A) averaged over any 15-minute period. The same WHO work estimates that around 40 percent of 12 to 35 year olds are exposed to potentially damaging sound levels in entertainment venues. Every extra 3 dB halves the sound energy and halves your safe exposure time.
Every venue sits differently on that scale, so we have compiled concert dB levels and how much protection you need across club nights, arenas and festival main stages. At 110 dB in front of the stacks, the same SNR 24 plugs leave you at 86 dB, which argues for shorter stints near the stage or a few steps back.
What Is the Difference Between 24 and 27 dB Noise Reduction?
Three decibels separate 24 dB and 27 dB of noise reduction, and because the decibel scale is logarithmic that gap halves the transmitted sound energy. At a 105 dB concert, though, the practical outcome is an estimated exposure of 81 dB against 78 dB, both comfortably under the 85 dB(A) upper action value.
Higher attenuation earns its keep in sustained exposure above 110 dB, in orchestra pits, on eight-hour festival shifts or standing beside the PA. Below that, the extra 3 dB mostly costs you clarity, because stronger attenuation makes speech and the mix harder to follow and tempts you to pull the plugs out between songs.
In one NPR listener poll, 71 percent said most shows they attend are too loud, and nearly half of the earplug wearers admitted they hate wearing them but do it anyway. A 24 dB plug you keep in for the whole set protects far more than a 27 dB plug that spends half the night in your pocket.
What SNR Do You Need for Concerts and Festivals?
For typical 100 to 110 dB(A) concert and club exposure, an earplug rated between SNR 18 and SNR 25 brings estimated exposure below the 85 dB(A) upper action value, and once you know your venue’s level you can use SNR to choose the right concert earplug instead of guessing.
Venue level is the starting point, and our buyer’s guide covers how to use SNR to choose the right concert earplug, including fit checks, filter options and when to size up your protection. Musicians should work from their instrument rather than the room: a drum kit produces 100 to 110 dB at the player’s ear and points to SNR 24 to 25, while an acoustic ensemble sitting nearer 90 dB is well served at SNR 15 to 20. The table below matches typical UK settings to a sensible SNR range.
| Setting | Typical level | Suggested SNR | Estimated exposure with SNR 24 |
|---|---|---|---|
| Acoustic or seated venue | 90–95 dB(A) | 15–20 | 66–71 dB |
| Club night or standard gig | 100–105 dB(A) | 20–25 | 76–81 dB |
| Arena or festival main stage | 105–110 dB(A) | 24–25 | 81–86 dB |
| Front of stage, beside the PA | 110–115 dB(A) | 25+, with breaks and distance | 86–91 dB |
Where Does the Music SoundPRO Fit In?
Our Music SoundPRO is a passive 2-lamella earplug in hypoallergenic silicone, certified at SNR 24 with H 24, M 21 and L 19, and reusable up to 100 times. Like every passive earplug, its attenuation rises with frequency, from 21.9 dB at 63 Hz to 35.3 dB at 8 kHz, so the highs are reduced most. You still hear the music, just quieter, and speech stays understandable with a correct fit.
If your exposure sits in the club-to-festival band, our Music SoundPRO 24 dB SNR earplugs publish the full EN 352-2 attenuation table on the product page.
How Do UK Noise Regulations Use SNR?
The Control of Noise at Work Regulations 2005 have covered music and entertainment since April 2008, and they set the 85 dB(A) upper action value that the sums on this page aim to stay under. HSE’s venue guidance, HSG260 Sound advice, selects hearing protection by SNR, and venue staff, engineers and promoters can read a full breakdown of how UK noise regulations use SNR for compliance in our guide covering action values, protection zones and the duties employers owe their staff.
For UK concert-goers the rating that matters is SNR, and using it takes ten seconds. Subtract the SNR from the venue level, check the result lands under 85 dB(A), and allow a few decibels of margin for imperfect fit. An SNR 24 earplug at a 105 dB show leaves you around 81 dB, protected for the full set.
Your hearing does not regenerate, and every gig you protect it at is a gig you will still hear clearly in twenty years. Pick the SNR that matches your venues, fit it properly, and keep it in until the encore ends.
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His connection to hearing protection stems from personal experience with sound sensitivity during live events and work in noisy environments, an issue that made him more aware of the long-term risks of unmanaged noise exposure. Today, as both a communicator and a user of BOLLSEN products, he is passionate about raising awareness around the importance of proactive hearing care.
At BOLLSEN, he develops data-driven marketing campaigns, writes SEO-focused articles, and manages communication channels that connect customers with practical knowledge about hearing protection. His work ensures that BOLLSEN’s message—prioritizing health, performance, and sustainability reaches a global audience in an engaging and trustworthy way.
Passionate about writing since childhood, Timotej combines creativity with a strong analytical approach, continuously testing new ideas in digital marketing, performance advertising, and social media. He believes in learning through innovation and collaboration, balancing leadership with openness to new perspectives.
Beyond his professional role, Timotej is committed to a healthy lifestyle and finds inspiration in fitness, sports, and quality time with friends. His personal passion for well-being aligns with BOLLSEN’s core values, making his work not only a career but also a cause he deeply believes in.