We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-22 · 8 min read · Independent comparison
If you want wireless earbuds that actively cancel noise and play music, choose TOZO NC20; if you need reusable earplugs that simply block sound for sleep, snoring or concerts, choose Vosaf Ear Plugs. These two products get lumped together in the same search because both promise "noise cancelling," but that phrase means something completely different in each case. One is a pair of Bluetooth earbuds with drivers, a charging case and a codec stack. The other is a molded silicone plug you push into your ear canal. Once you understand that gap, the decision takes about ten seconds.
• TOZO NC20 – biggest strength: Adaptive hybrid ANC that adjusts to your surroundings, paired with Hi-Res Audio wireless and LDAC support for genuinely detailed playback.
• TOZO NC20 – biggest trade-off: It's a battery-powered electronic device. You have to charge it, and its noise reduction depends on ANC working as intended rather than physically sealing your ear.
• Vosaf Ear Plugs – biggest strength: Passive, mechanical blocking — no battery, no pairing, no firmware. Just silicone, with four ear-tip sizes to match your canal.
• Vosaf Ear Plugs – biggest trade-off: No audio. No music, no calls, no notifications. They create silence and nothing else.
• Who TOZO NC20 is for: Anyone who wants to listen — commuters, remote workers, gym-goers, people who take calls on the move.
• Who Vosaf Ear Plugs is for: Anyone who wants to stop listening — side sleepers, snorers' partners, concert-goers, flyers, shooters, students in noisy dorms.
The NC20 is built around sound first and silence second. It uses adaptive hybrid active noise cancellation — hybrid meaning it samples noise both inside and outside the ear — and TOZO states it blocks up to 99% of ambient noise, from traffic to nearby conversation. The key word there is adaptive: the cancellation adjusts in real time rather than sitting at one fixed level. That matters on a train platform where the rumble changes as trains come and go, or in an open office where the noise floor rises and falls.
On the audio side, this is a more ambitious package than most budget ANC buds. It supports Hi-Res Audio wireless with LDAC, and TOZO says LDAC transmits roughly three times more data than standard Bluetooth — which translates to more detail in the upper frequencies if your phone supports the codec. The stated frequency range runs a very wide 12Hz to 40kHz, and TOZO's OrigX Pro processing is meant to add a sense of space. Per the spec sheet, the speaker driver is 6mm, which TOZO credits with a wide range, dynamic treble and powerful bass. I'd frame the 6mm figure honestly: it's a small driver, so expect tuning and processing to do the heavy lifting on low end rather than raw physical displacement.
Battery is laid out plainly: 40mAh in each earbud, 400mAh in the charging bin. That works out to about 7 hours per charge and roughly 32 hours total with the case, which TOZO likens to around 480 songs. Charging is USB-A to USB-C. Bluetooth 5.3 handles the connection, and the build is described as lightweight, in-ear and waterproof — a sensible combination for running, workouts or rainy commutes.
Vosaf Ear Plugs: Who It's For
The Vosaf approach is the opposite philosophy: no electronics at all, just a physical barrier. The model is SE-01-55dB, made from soft hypoallergenic silicone in an Obsidian color, shaped as an earbud-style plug with four tip sizes — XS, S, M and L. That size spread is the single most important spec here, because passive earplug performance lives and dies on seal quality. Vosaf claims the sizing fits 99% of ear canal types, and in its own product trials 92% of users reported all-night comfort. Take those numbers as the brand's testing claims rather than independent verification, but the underlying design logic is sound: more sizes means a better chance of a real seal.
The headline claim is up to 95% noise reduction, backed by lab testing per Vosaf. The examples given are concrete: 30dB of traffic noise, 25dB of snoring, or airplane engines above 80dB, all lowered to a comfortable level. Vosaf also says users fall asleep twice as fast. Again — brand testing, not something I can verify — but the mechanism is believable in a way ANC claims aren't, because a properly sealed silicone plug physically stops sound pressure from reaching your eardrum.
The versatility is the real selling point. Vosaf positions these for sleep and snoring, but also as concert earplugs that shield ears above 100dB while keeping music clear and natural, plus travel, work, study and shooting. The whole kit weighs under 20 grams and measures about 3.35 x 3.35 x 1.1 inches, with a compact aluminum carry case.
Worth noting: Vosaf leans hard on the reusable-versus-disposable argument, claiming the washable design saves over $50 a year compared with one-use foam plugs. That's a marketing estimate, not an audited figure — but the durability point stands on its own. Silicone you rinse and reuse beats foam you throw away.
Buy the Vosaf plugs if silence is the entire goal and you want something with no battery, no app and no charging cable. Skip them if you need to hear anything through them — music, podcasts, a phone call, a train announcement.
Side-by-Side: Which Should You Choose?
• Best for sleep and snoring → Vosaf Ear Plugs. Sealed silicone plus four tip sizes is the right tool for lying in bed. Wearing ANC buds overnight means charging them daily.
• Best for loud environments like concerts or shooting → Vosaf Ear Plugs. Vosaf specifically cites protection above 100dB while keeping music natural, which is exactly what a musician's plug is for.
• Best for commuting and open offices → TOZO NC20. Adaptive hybrid ANC that reacts to changing noise is designed for exactly this, and you get audio on top.
• Best for workouts and rain → TOZO NC20. It's specified as waterproof. The Vosaf plugs are silicone and will survive sweat, but they give you nothing to listen to while you run.
• Best for zero maintenance → Vosaf Ear Plugs. Rinse them, dry them, done. The NC20 needs USB-C charging and pair-time.
• Best for travel → Depends on the trip. A red-eye flight where you want to sleep: Vosaf. A long flight where you want to watch movies: NC20. Pack both if you fly often.
• Best fit flexibility → Vosaf Ear Plugs. Four tip sizes versus one fixed earbud shape. If standard earbuds always feel loose or sore, that matters.
If I had to pick one, I'd buy the TOZO NC20 — but only because my day involves music, calls and a noisy commute, and the NC20 covers all three in one device. In my opinion it's the more versatile purchase for most people reading a "noise cancelling" comparison, since ANC plus LDAC plus 32 hours of case battery handles far more situations.
That said, if your actual problem is sleep, snoring or a partner who saws logs at 3 a.m., the Vosaf Ear Plugs are the honest answer. No earbud — ANC or otherwise — is the right tool for that job. Check the current price on Amazon for both before deciding, since the value math shifts depending on what you're replacing.
They cancel noise in completely different ways, so "better" depends on the noise. The NC20 uses adaptive hybrid ANC to reduce up to 99% of ambient sound while you listen to audio. The Vosaf plugs physically seal the canal and Vosaf claims up to 95% reduction with no electronics. For steady low-frequency noise while you're awake, ANC is convenient. For blocking sound completely so you can sleep, a sealed silicone plug is the more reliable approach.
Nothing in the spec sheet suggests they're designed for overnight wear. They're lightweight in-ear earbuds with a 40mAh battery giving about 7 hours per charge, so you'd be charging them daily if you slept in them, and side sleeping with hard electronics in your ears is uncomfortable for most people. If sleep is the goal, that's what the Vosaf plugs are for.
No. There are no speakers and no Bluetooth in them. They're passive silicone plugs that block sound. The one audio-related use Vosaf describes is concerts, where they lower levels above 100dB while keeping the music clear and natural — that's attenuation, not playback.
For studying in a noisy dorm or library, I'd lean Vosaf — cheap, silent, no charging, and the four tip sizes help you get a proper seal. For working from home while taking calls and listening to music between meetings, the TOZO NC20 is the better fit, since it handles both audio and background noise in one device.
Yes. Vosaf describes them as washable, reusable silicone rather than disposable foam, and includes an aluminum carry case. The brand estimates that reusability saves over $50 a year compared with single-use foam plugs — treat that as Vosaf's own marketing estimate rather than a guaranteed figure.
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