True Wireless
Moondrop ULTRASONIC
72Good
$75
Full review dataMoondrop ULTRASONIC vs OnePlus Buds Pro 4: which should you buy?
On aggregated review scores the OnePlus Buds Pro 4 comes out ahead with an HearWiki score of 84. The full breakdown - sub-scores, specs and what reviewers actually said - is below.
Our pick: OnePlus Buds Pro 4 - Great overall at around $130.
True Wireless
OnePlus Buds Pro 4
84Great
$130
Full review dataScore breakdown
Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.
Moondrop ULTRASONIC
Sound7.5
Noise cancelling6.0
Battery6.5
Calls6.0
Value8.0
OnePlus Buds Pro 4
Sound8.5
Noise cancelling8.0
Battery8.5
Calls7.5
Value9.0
Specifications
| Spec | Moondrop ULTRASONIC | OnePlus Buds Pro 4 |
|---|---|---|
| Type | True Wireless | True Wireless |
| Price (USD) | $75 | $130 |
| HearWiki score | 72 / 100 · Good | 84 / 100 · Great |
| Released | 2025 | 2026 |
| Audio | ||
| Driver | hybrid 1DD + 1BA | dual drivers; 11mm woofer + 6mm tweeter |
| Driver size | 13 mm | 11 mm |
| Drivers per side | 2 | 1 |
| Frequency response | 20Hz-20kHz | 10Hz-40kHz |
| Sensitivity | 106 dB/mW | - |
| Wireless | ||
| Bluetooth | 5.3 | 5.4 |
| Bluetooth version | 5.3 | - |
| Codecs | SBC, AAC, LC3, LDAC | SBC, AAC, LHDC 5.0 |
| Multipoint pairing | No | Yes |
| Latency | 55 ms | 47 ms |
| Wireless range | 10 m | 10 m |
| Battery | ||
| Battery life | 6 h | 13 h |
| Battery life (ANC on) | - | 7 h |
| Battery incl. case | 18 h | 45 h |
| Full charge time | 60 min | 70 min |
| Quick charge | - | 10 min = 11 hours playback |
| Wireless charging | No | Yes |
| Features | ||
| Active noise cancelling | Yes | Yes |
| ANC type | adaptive | adaptive |
| Transparency mode | Yes | Yes |
| Companion app | Yes | Yes |
| Custom EQ | Yes | Yes |
| Wear detection | No | Yes |
| Controls | touch | touch |
| Voice assistant | - | yes |
| Design | ||
| Weight | - | 4.73 g |
| Case weight | - | 50.62 g |
| Water resistance | none | IP55 |
| Foldable | No | - |
| Detachable cable | No | - |
| USB-C | Yes | Yes |
| Model code | - | OnePlus Buds 4 |
| Calls | ||
| Microphones | - | 3 |
What reviewers said
Moondrop ULTRASONIC
The Moondrop ULTRASONIC is a budget-friendly true wireless earbud that pairs a hybrid dual-driver setup with a balanced, neutral sound signature. It offers a solid feature set for the price, including LDAC support, feedforward ANC, and a transparent mode, though it prioritizes versatility over class-leading performance in any single area. Its compact, distinctive design and comfortable fit make it a practical daily option, but minor usability quirks and average isolation keep it from being a standout.
- Pro:Balanced, neutral tuning with hybrid drivers
- Pro:LDAC support for high-quality wireless audio
- Pro:Comfortable fit with a distinctive design
- Con:Limited passive isolation reduces ANC effectiveness
- Con:Slight background hiss in some situations
- Con:Awkward volume step controls
OnePlus Buds Pro 4
The OnePlus Buds Pro 4 are a well-rounded pair of true wireless earbuds that deliver impressive audio, adaptive noise cancellation, and strong battery life for their price. They're particularly suited for active lifestyles thanks to their IP55 rating and secure fit, with a feature set that includes multipoint, wireless charging, and customizable EQ. Overall, they offer excellent value and perform above their price point across most key areas.
- Pro:Rich dual-driver sound with LHDC support
- Pro:Effective adaptive ANC and transparency mode
- Pro:Long battery life with wireless charging case
- Con:Touch controls may require a learning curve
- Con:No official mention of wear detection
- Con:Slightly bulky case compared to rivals
Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.
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