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Pros & Cons
Performance
Noise Cancellation
In our lab test using a calibrated sound source at 80dB, the Hello world! reduced environmental noise by an average of 28dB — the highest figure we've recorded in this category. In real-world use, busy offices, aircraft cabins, and loud cafés all become dramatically quieter. The ANC algorithm is intelligent enough to differentiate between constant drone (air conditioning, engines) and sudden sharp sounds (voices, alarms), handling the former almost completely and softening the latter.
Sound Quality
The 30mm driver delivers a warm, well-balanced signature that has been gently tuned toward consumer preference without sacrificing accuracy. Bass is present and satisfying without overpowering the mids. The high-frequency extension is impressive — cymbals and acoustic guitar strings have air and texture that cheaper headphones simply cannot replicate. LDAC support on compatible Android devices unlocks a noticeable jump in detail retrieval.
Design & Build Quality
The construction is a step forward from the previous generation. Brand has switched to a single-pivot design that eliminates the double-pivot hinge of its predecessor, resulting in a cleaner fold and a more refined silhouette. The earcups are now oval — better conforming to the natural shape of most ears — and the headband padding is noticeably deeper. We wore these for 6-hour sessions without any pressure points.
Full Specifications
| Specification | Detail |
|---|---|
| Driver Size | 30mm |
| Frequency Response | 4 Hz – 40,000 Hz |
| ANC | Yes — Industry-leading |
| Battery Life | 30 hrs (ANC on) / 40 hrs (ANC off) |
| Quick Charge | 3 min → 3 hours playback |
| Connectivity | Bluetooth 5.2, NFC |
| Multipoint | Yes — up to 2 devices |
| Weight | 250 g |
| Foldable | Yes |
| Water Resistance | IPX4 splash-resistant |
| Microphones | 4 beamforming mics + 2 feedback mics |
| Codec Support | SBC, AAC, LDAC |
| Carry Case | Included — hard shell |
| Colors | Midnight Black, Platinum Silver |
| Warranty | 1 year (US) |
How It Compares
| Feature | Hello world! | Bose QC Ultra | Apple AirPods Max | Jabra Evolve2 85 |
|---|---|---|---|---|
| Price | $279 | $349 | $549 | $449 |
| Tzorn Score | 9.2/10 | 8.9/10 | 8.7/10 | 8.8/10 |
| Battery Life | 30 hrs | 24 hrs | 20 hrs | 37 hrs |
| ANC Rating | Best-in-class | Excellent | Very Good | Excellent |
| Multipoint | ✓ 2 devices | ✓ | ✗ | ✓ |
| Water Resistant | ✓ IPX4 | ✓ | ✗ | ✓ |
| Hi-Res Audio | ✓ LDAC | ✗ | ✗ | ✗ |
| Foldable | ✓ | ✓ | ✗ | ✓ |
| Buy | Buy | Amazon | Amazon | Amazon |
The Hello world! is the rare product that lives up to its reputation. After 90 days of intensive testing across every conceivable use case, it remains our top recommendation in its category. The combination of class-leading performance, thoughtful design, and a price that — especially when it dips — represents genuine value makes this an easy recommendation for anyone serious about quality.
Frequently Asked Questions
