The TOZO NC9 Truly Wireless are well-built in-ears with an impressive ANC feature that can block out lots of background noises. These headphones have an excited, V-shaped sound profile that adds an extra thump and punch to your audio while making vocals and lead instruments sparkly and bright. While there isn't a dedicated ANC off feature, 'Transparency Mode', allows you to hear some ambient noise around you. Unfortunately, they don't have any features for customizing their sound to your liking, and they only last for a little over four hours off of a single charge. Fortunately, their portable charging case offers around three extra charges for when you're on-the-go.
Our Verdict
The TOZO NC9 are passable for neutral sound. Their V-shaped sound profile adds extra thump and punch in the bass range while making vocals and lead instruments sound bright and sparkly. However, this may be a bit overwhelming for fans of neutral sound. Unfortunately, they don't offer any sound customization features.
- Consistent audio delivery across different users.
- No sound customization options.
The TOZO NC9 are good for commute and travel. Thanks to their ANC feature, they can block out bass-heavy background noises like bus and plane engines as well as the sounds of people chatting around you. Their in-ear design is very portable, and while their continuous battery life isn't ideal for long plane rides, their portable charging case makes it easy to power up when you're on-the-go.
- Impressive noise isolation.
- Portable design.
- 4.2-hour continuous battery life.
The TOZO NC9 are impressive for sports and fitness. These portable, breathable in-ears have a stable fit, so they shouldn't fall out of your ears during moderately intense workouts. They even have an IPX6 rating for water resistance, though we don't currently test for this. That said, their bulky design may not be comfortable for all listeners.
- Portable design.
- IPX6 rating for water resistance.
- Stable enough for moderately intense workouts.
- 4.2-hour continuous battery life.
The TOZO NC9 are fair for office use. Their ANC feature does an impressive job blocking out background noises like coworkers chatting nearby, and you can activate their Transparency Mode if you want to hear ambient noise. They don't leak a lot of noise, either, so you can crank up the volume on your music without really bothering those around you. While they're decently comfortable, their bulky fit isn't ideal for all listeners, and their 4.2-hour continuous battery life isn't ideal for long shifts. That said, their portable charging case offers around three extra charges.
- Impressive noise isolation.
- 4.2-hour continuous battery life.
The TOZO NC9 aren't compatible with PS4, PS5, Xbox One, or Xbox Series X consoles. While you can use them with Bluetooth-enabled PCs, their latency is likely too high to be suitable for gaming.
The TOZO NC9 are wireless-only headphones, so they aren't suitable for wired gaming.
The TOZO NC9 are decent for phone calls. Their integrated microphone has a decent recording quality, so whoever's on the other end of the line should be able to understand you, even if your voice sounds a bit thin. Also, their ANC feature offers impressive noise isolation, so you aren't distracted by background noises during your calls. However, the microphone struggles to separate your voice from loud background noise and speech may be drowned out.
- Impressive noise isolation.
- 4.2-hour continuous battery life.
Changelog
- Updated Aug 11, 2021: Converted to Test Bench 1.5.
- Updated Feb 25, 2021: We retested the passive noise isolation performance of these headphones while they were turned off. The Noise Isolation score hasn't changed.
- Updated Feb 11, 2021: Review published.
- Updated Feb 08, 2021: Early access published.
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Differences Between Sizes And Variants
The TOZO NC9 earbuds come in 'Black', and you can see the label for the model we tested here.
If you come across another version, let us know in the discussions so we can update our review.
Popular Headphones Comparisons
The TOZO NC9 are noise cancelling in-ears with an impressive ANC performance. They have a similar, slightly bulky design compared to the TOZO T12 Truly Wireless and the TOZO T10 Truly Wireless. Their V-shaped sound profile adds thump, punch, and excitement to your audio, but there isn't any way to customize the sound. You can only cycle between their ANC feature and Transparency Mode, which lets in some ambient noise, but you can't turn both of these features off at the same time. See also our recommendations for the best wireless Bluetooth earbuds, the best noise cancelling earbuds and in-ears, and the best wireless Bluetooth earbuds under $100.
The TOZO NC9 Truly Wireless are better headphones than the TOZO T10 Truly Wireless. The NC9 have a more comfortable fit, and their V-shaped sound profile is less boomy and muddy compared to the T10's bass-heavy sound profile. That said, the T10 have a better leakage performance, and their passive noise isolation has somewhat similar performance compared to the NC9's ANC feature, although they don't reduce as much bass-range noise.
The TOZO NC7 Truly Wireless are better headphones than the TOZO NC9 Truly Wireless. The NC7 have a more balanced sound profile compared to the NC9, especially in the bass range, so they're more suitable for fans of neutral sound. Also, they leak less audio, and they have longer continuous battery life. Their charging case also supports wireless charging, which is handy. That said, the NC9's charging case offers around one extra charge.
The TOZO NC9 Truly Wireless and the TOZO T6 Truly Wireless have similar overall performances, so you may prefer one over the other depending on your listening habits. Thanks to their ANC feature, the NC9 offer a bit better noise isolation, especially against bass-heavy background noises like bus and plane engines. However, the T6 have a better leakage performance, and their continuous battery life is a bit longer.
The TOZO NC9 Truly Wireless and the TOZO T12 Truly Wireless are very similarly performing headphones, so depending on your listening habits, you may prefer one over the other. The NC9 have an ANC feature that offers better noise isolation, especially against bass-heavy background noises like bus and plane engines. However, the T12 have a better leakage performance, and their continuous battery life is a bit longer.
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