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Image © AmazonKZ S2
At a glance
- Brand
- KZ
- Type
- True Wireless
- Fit
- -
- Connection
- Wireless
- Noise cancelling
- No
- Released
- 2020
Score breakdownweak overall
Sound5.8
Battery3.0
Calls4.0
Are KZ S2 TWS really the best wireless earbuds under $50, as some YouTubers claim? Plus: KZ S2 vs KZ S1, KZ S1D, SoundPEATS TrueDot and Fiil T1X.
The HearWiki takeAI-condensed
The KZ S2 is an affordable pair of true wireless earbuds that offers a hybrid dual-driver setup, Bluetooth 5.0, touch controls, and IPX5 water resistance. Its sound is generally described as bass-forward and detailed, though some listeners find the treble slightly harsh or splashy. While it provides a comfortable fit and stable connection for many, its short single-charge battery life and inconsistent wireless performance have drawn criticism.
What works
- Comfortable and lightweight fit
- Strong bass and clear detail
- IPX5 water resistance for workouts
- Touch controls and USB-C charging
- Good value for the price
What doesn't
- Short battery life per charge (3 hours)
- Treble can be harsh or splashy
- Wireless connection may be unstable
- Doesn't outclass competitors in any area
Paraphrased from published reviews & specs - not an original hands-on test. Our AI disclosure.
Specifications
| Driver | 2-driver hybrid |
|---|---|
| Driver type | hybrid |
| Drivers per side | 2 |
| Frequency response | 20 Hz - 40 kHz |
| Sound signature | v-shaped |
| Impedance | 24 Ω |
| Sensitivity | 98 dB/mW |
Audio
| Driver | 2-driver hybrid |
|---|---|
| Driver type | hybrid |
| Drivers per side | 2 |
| Frequency response | 20 Hz - 40 kHz |
| Sound signature | v-shaped |
| Impedance | 24 Ω |
| Sensitivity | 98 dB/mW |
Wireless
| Bluetooth | 5.0 |
|---|---|
| Codecs | SBC, AAC |
| Multipoint pairing | No |
| Wireless range | 20 m |
Battery
| Battery life | 3 h |
|---|---|
| Battery incl. case | 18 h |
| Full charge time | 120 min |
| Wireless charging | No |
Features
| Active noise cancelling | No |
|---|---|
| Controls | touch |
| Voice assistant | Yes |
Design
| Water resistance | IPX5 |
|---|---|
| USB-C | Yes |
What the reviews said
7 source(s) feeding this product's score.
What YouTube reviewers say
Video reviews we found, each condensed to its verdict. They do feed the HearWiki score, at a measured weight below what a published written review carries.
The consensus
Positiveacross 5 videosReviewers consistently praise the KZ S2 for its exceptional sound quality at a budget price, highlighting the balanced, detailed audio from its hybrid dual-driver setup and its strong overall value.
Reviewers liked
- Excellent sound quality with balanced, detailed audio
- Comfortable and stable fit with ear fins
- Good value for the price
- Low-latency mode for gaming and movies
Reviewers flagged
- No volume controls on earbuds
- Average microphone quality
- Bulky case with small battery
- Short battery life
- Active noise cancellation not effective
7:19Unbelievable Sound For $30! : KZ S2 True Wireless
The reviewer praises the KZ S2 true wireless earbuds for their exceptional sound quality, featuring a balanced armature and dynamic driver combo that delivers accurate, detailed audio across all genres. They highlight the low-latency mode, good microphone, and overall value at $29, while noting minor drawbacks like the lack of volume controls, a bulky case with a small battery, and only two ear tip sizes included.
PositiveWatch on YouTube
14:06KZ S2 Review - The BEST $30 Hybrid-TWS? ( vs KZ S1, S1D, TRN T200, Sabbat E12 )
The reviewer praises the KZ S2 as an excellent budget hybrid TWS, highlighting its superior sound quality, particularly the well-tuned highs and mids, and its comfortable, stable fit. They consider it the best hybrid TWS they've heard in its price range, despite some minor drawbacks like a mediocre case and average microphone. Overall, they strongly recommend it, even preferring it over more expensive competitors.
PositiveWatch on YouTube
9:57KZ S2 Review Fantastic Sound For The Price
The reviewer finds the KZ S2 earbuds to offer excellent sound quality for their low price, particularly praising the balanced tuning and clarity from the hybrid dual-driver setup. However, they note several drawbacks including a lack of volume controls, ineffective active noise cancellation, average microphone quality, and a fit that may not be ideal for sports. Overall, they recommend them for the early-bird price of $29, emphasizing that the audio performance is the main selling point.
PositiveWatch on YouTube
18:14THE BEST KZ TWS, RIGHT NOW! - KZ S2 Full Review ($35 Indiegogo Price)
The reviewer considers the KZ S2 the best true wireless earbuds from KZ so far, especially at its early-bird price of $35, praising its improved bass and overall balance. However, he notes that the sound clarity is a slight step back from the S1, and the lack of volume control and mediocre battery life make it less compelling at the expected $50 retail price.
PositiveWatch on YouTube
12:00A Budget Wonder! KZ S2
The reviewer finds the KZ S2 to be a well-built and great-sounding budget pair of earbuds, with a balanced sound signature and impressive volume. However, they note the battery life is short and the call quality in noisy environments is only average, but overall it's a strong value for the price.
PositiveWatch on YouTube
Summaries are AI condensations of each video's own conclusion, not transcripts. Titles, thumbnails and view counts belong to their channels.
What owners say
A sample of buyer reviews, quoted as written. They aren't verified and they don't feed the HearWiki score - that comes from published reviews only.
via Amazon customer reviews
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Alternatives in the $15–$60 range
Other true wireless models at a comparable price, ordered by HearWiki score.
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Where it sits in our rankings
The data-driven guides this model qualifies for.