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@tidy_alder_85 · Owner-reported
Owned 1–6 months · Still using it: yes, daily · Posted
As expected they sound really good, especially for Bluetooth headphones. Comfort is just average for me. Personally, this kind of thin headband tends to be uncomfortable during long sessions (6+hrs). The case and additional accessories are brilliant, really a nice touch.
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At 8.3, its noise cancelling beats 52% of over-ear headphones we've measured.
Measured on 64 of the 243 we've cataloged.
A 4.6 puts its audio quality in the top quarter of over-ear headphones we've measured.
Measured on 49 of the 243 we've cataloged.
Would buy it again and still uses it daily.
Owned 1–6 months.
above average for over-ear headphones — based on 160 of 243 we've cataloged.
Usb-c is the most common — on 89% of the 139 over-ear headphones we've cataloged (of 243).
5.2 appears on 16% of the 153 over-ear headphones we've cataloged (of 243).
above average for over-ear headphones — based on 201 of 243 we've cataloged.
Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.
Sennheiser HDB 630 Frequency Response (measured on a B&K 5128)
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Measured frequency response (dB relative) against the SoundGuys Headphone Preference Curve. When the measurement goes above the dashed line, that frequency is louder than our preference curve, and when it goes below: it's quieter. Use the curve for comparison purposes only, as your taste may vary.
| Frequency (Hz) | Response (dB) |
|---|---|
| 20 | 6.0 |
| 25 | 6.1 |
| 32 | 5.8 |
| 40 | 5.5 |
| 50 | 4.6 |
| 63 | 3.8 |
| 80 | 3.2 |
| 100 | 1.6 |
| 125 | 0.4 |
| 160 | -0.5 |
| 200 | -1.3 |
| 250 | -1.9 |
| 315 | -2.0 |
| 400 | -2.1 |
| 500 | -1.3 |
| 630 | -1.1 |
| 800 | -0.6 |
| 1000 | 1.5 |
| 1250 | 2.2 |
| 1600 | 2.2 |
| 2000 | 0.9 |
| 2500 | 3.4 |
| 3150 | 8.6 |
| 4000 | 7.1 |
| 5000 | 6.5 |
| 6300 | 2.9 |
| 8000 | 2.8 |
| 10000 | -0.1 |
| 12500 | -7.9 |
| 16000 | -7.6 |
| 20000 | -10.2 |
Sennheiser HDB 630 Attenuation (measured on a B&K 5128)
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Solid lines: passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Dashed lines: total attenuation (dB) with ANC on — passive isolation plus active noise cancelling. Higher on the chart means more attenuation.
| Frequency (Hz) | Attenuation (dB) |
|---|---|
| 21 | 0.3 |
| 26 | 2.1 |
| 33 | 3.0 |
| 41 | 2.8 |
| 52 | 3.4 |
| 65 | 4.3 |
| 82 | 5.2 |
| 103 | 7.1 |
| 130 | 7.9 |
| 163 | 8.3 |
| 205 | 8.8 |
| 259 | 10.9 |
| 325 | 13.0 |
| 410 | 9.5 |
| 516 | 10.1 |
| 613 | 11.5 |
| 772 | 16.5 |
| 972 | 18.1 |
| 1220 | 24.4 |
| 1540 | 29.3 |
| 1940 | 35.7 |
| 2440 | 34.5 |
| 3070 | 24.7 |
| 3870 | 30.6 |
| 4870 | 39.9 |
| 6130 | 43.4 |
| 7720 | 45.2 |
| 9720 | 47.3 |
| 12200 | 38.5 |
| 15400 | 44.0 |
| 19400 | 40.0 |
| Frequency (Hz) | Total attenuation (dB) |
|---|---|
| 21 | 9.4 |
| 26 | 16.3 |
| 33 | 20.4 |
| 41 | 17.1 |
| 52 | 16.2 |
| 65 | 18.0 |
| 82 | 20.4 |
| 103 | 23.6 |
| 130 | 27.3 |
| 163 | 29.2 |
| 205 | 32.8 |
| 259 | 28.6 |
| 325 | 27.6 |
| 410 | 19.1 |
| 516 | 15.9 |
| 613 | 14.7 |
| 772 | 19.8 |
| 972 | 18.1 |
| 1220 | 27.5 |
| 1540 | 29.6 |
| 1940 | 37.0 |
| 2440 | 33.9 |
| 3070 | 22.8 |
| 3870 | 30.6 |
| 4870 | 42.5 |
| 6130 | 41.8 |
| 7720 | 48.1 |
| 9720 | 42.9 |
| 12200 | 40.0 |
| 15400 | 45.9 |
| 19400 | 41.4 |
Sennheiser HDB 630 MDAQS
Multi-Dimensional Audio Quality Scores, Scale 1 - 5
Virtual mean opinion scores (MOS) on a 1–5 scale, modeled from the measured response by HEAD acoustics’ MDAQS (Multi-Dimensional Audio Quality Score) model. Higher is better across timbre, distortion, and immersiveness — add other models to see where this one lands.
The verdict
If you want some of the best-sounding ANC headphones of all time, the Sennheiser HDB 630 fit the bill. With excellent sound quality, comfort, and connection options, these cans should be in the conversation for anyone's next headphones.
✓Liked: Excellent sound quality, Connection options, Included dongle, Durable case
✕Could be better: Price, Somewhat weak ANC
What a reader who owns the Sennheiser HDB 630 reports after living with it. Owner-reported, checked before publishing; ordered photo-verified first, then newest.
Owner reviews are not paid for, not solicited from specific owners, and not rewritten by us: at most we proofread typos, which is shown on the review’s own page and which the author can undo. The commission SoundGuys may earn on this page comes from retail links, never from owner reviews.
1 owner review
TAEvery author writes under a generated pseudonym; a member can choose to show their name and photo beside it. A signed-in author’s email is never shown. Read more · The reader says they own it. We have not seen proof, and we say so — no label here is proof of a purchase. Read more · Owned 1–6 months · Still using it: yes, daily · Posted
Would buy againAs expected they sound really good, especially for Bluetooth headphones. Comfort is just average for me. Personally, this kind of thin headband tends to be uncomfortable during long sessions (6+hrs). The case and additional accessories are brilliant, really a nice touch.
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Sennheiser HDB 630
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3 of 5 would buy again
5 owners · owners report ~40 h per charge vs 40 h claimed
Comfort beat their expectations
Expected more from the fit and build
The battery beat their expectations
1 of 1 would buy again
1 owner
Nothing surprising about comfort
0 of 1 would buy again
1 owner
The noise cancelling beat their expectations
0 of 1 would buy again
1 owner · 1 photo-verified
Expected more from comfort
0 of 1 would buy again
1 owner
Comfort beat their expectations
