Open-Ear
Beyerdynamic Amiron Zero
78Great
$183
Full review dataBeyerdynamic Amiron Zero vs Soundcore C40i: which should you buy?
On aggregated review scores the Beyerdynamic Amiron Zero comes out ahead with an HearWiki score of 78. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: Beyerdynamic Amiron Zero - Great overall at around $183.
Open-Ear
Soundcore C40i
72Good
$99
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Beyerdynamic Amiron Zero
Sound7.5
Battery8.0
Calls7.0
Value8.0
Soundcore C40i
Sound7.0
Battery6.0
Calls6.5
Value7.5
Specifications
| Spec | Beyerdynamic Amiron Zero | Soundcore C40i |
|---|---|---|
| Type | Open-Ear | Open-Ear |
| Price (USD) | $183 | $99 |
| HearWiki score | 78 / 100 · Great | 72 / 100 · Good |
| Released | 2025 | 2024 |
| Audio | ||
| Driver | dynamic | dynamic racetrack |
| Driver size | 12 mm | 12 mm |
| Drivers per side | 1 | 1 |
| Frequency response | 20Hz-20kHz | 20Hz-20kHz |
| Impedance | - | 22 Ω |
| Wireless | ||
| Bluetooth | 5.4 | 5.4 |
| Bluetooth version | 5.4 | 5.4 |
| Codecs | SBC, AAC | SBC, AAC |
| Multipoint pairing | Yes | Yes |
| Wireless range | 15 m | - |
| Battery | ||
| Battery life | 6 h | 7 h |
| Battery incl. case | 20 h | 21 h |
| Full charge time | 120 min | - |
| Quick charge | 10 min = 2 h | 10 min = 2 h |
| Wireless charging | No | No |
| Features | ||
| Active noise cancelling | No | No |
| ANC type | none | - |
| Transparency mode | Yes | - |
| Companion app | Yes | Yes |
| Custom EQ | - | Yes |
| Wear detection | Yes | - |
| Controls | touch | buttons |
| Design | ||
| Weight | 6 g | 5.8 g |
| Case weight | 50 g | - |
| Water resistance | IP54 | IPX4 |
| USB-C | Yes | Yes |
| Calls | ||
| Microphones | 3 | 2 |
What reviewers said
Beyerdynamic Amiron Zero
The Beyerdynamic Amiron Zero are lightweight, open-ear wireless earbuds designed for all-day comfort and clear, spacious audio. They offer a solid feature set including Bluetooth 5.4, multipoint, and a combined 20-hour battery life, though their open design means limited noise isolation and lighter bass. With a strong overall performance in its category, they're a compelling choice for those prioritizing awareness and comfort over immersive isolation.
- Pro:Very lightweight (6g) with comfortable open-ear fit
- Pro:Solid 20-hour total battery life with quick charge support
- Pro:Bluetooth 5.4 with multipoint for seamless device switching
- Con:No active noise cancellation and minimal passive isolation
- Con:Bass response is reduced due to open-ear design
- Con:Supports only SBC and AAC codecs, no aptX or LDAC
Soundcore C40i
The Soundcore C40i is a well-rounded open-ear wireless earbud that delivers above-average audio for its style, with punchy bass and clear mids. It offers practical features like multi-device pairing, app-based EQ, and quick charging, making it a solid budget-friendly choice for workouts and daily use, though its battery life is modest and it lacks active noise cancellation.
- Pro:Comfortable open-ear fit ideal for exercise
- Pro:Solid sound quality with notable bass for open-ear design
- Pro:Reliable multipoint connection for dual-device use
- Con:Battery life is only average at 7 hours per charge
- Con:No active noise cancellation
- Con:Supports only SBC and AAC codecs, not higher-quality options
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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