Headphones and earbuds · Sennheiser
Owners keep the HDB 630 for its sound, which many rate as excellent for Bluetooth headphones at the price, with noise cancelling that trails Sony and Bose as the usual trade-off.
Sound quality is clear praise. Owners call it outstanding for wireless headphones at this price and say it suits every kind of music. Some say it holds its own against much more expensive models.
Noise cancelling is a clear complaint. Owners say it could be better and that Sony's XM line and Bose still do this job better. That gap is the main thing keeping some of them from recommending it outright.
The Sennheiser HDB 630 is a wireless, closed-back over-ear headphone with noise cancelling. It is for people who care a lot about sound quality but want to go without a cable on the move. It comes with a small USB-C Bluetooth adapter (BTD 700) that you plug into a phone or computer for better-quality wireless sound.
| Type | Closed-back, over-ear, wireless |
|---|---|
| Noise cancelling | Yes, adaptive |
| Battery life | Up to 60 hours |
| Charging | USB-C (USB-C to USB-C cable, 1.2 m, included) |
| Bluetooth and codecs | Bluetooth 5.2; aptX Adaptive, aptX HD, aptX, AAC, SBC |
| Weight | 311 g (without cable) |
| Water resistance | |
| Warranty |
From the maker's spec page, checked October 7, 2026. A blank row means the maker does not state it.
Up to 60 hours means a week or more of daily commuting on one charge. At 311 g it is on the heavy side for wireless headphones, so you will notice it on your head. iPhones only use AAC, and many phones do not support the aptX codecs, so the included adapter is what lets you get the higher-quality wireless sound (up to 24-bit/96 kHz). Sennheiser does not list a water rating, so keep it out of rain and sweat.
Pick up to three. You get a page with just those, side by side, on the subjects owners raised.
Once the novelty wears off, the sound is still what keeps owners happy. One sold a pair of wired Hifiman Sundaras to switch to these and says the reviews were accurate. Another returned AirPods Max for them, and says the Sennheisers weigh less, don't squeeze the head and come with far more EQ options and an analog cable input. Owners who like to tune their sound praise the EQ customization. Opinions on the parametric EQ are divided: some like it, while others want to type exact values instead of dragging controls. Comfort comes out positive overall, though one owner finds the stock pads uncomfortable.
Owners have had to adjust to a few things. These are large headphones, and one owner says the case is almost twice as thick as the Momentum 5's, which matters when space in a bag is tight. Touch controls can need extra swipes before they register. For the gym, one owner who owns both prefers the Momentum 5 because it clamps more firmly. On value, owners are divided: some say nothing sounds better for the money, while others say it's worth spending a bit more on an XM6 or Momentum 5. Price on its own draws more complaints than praise.
None of the supplied accounts describe the headphones failing. The complaints about build quality are about how they feel. Owners say the plastic seems less sturdy than on the Momentum 5 and that the headband feels like it could snap when you pull it open to put it on. They also say the soft ear pads may not seal properly, which weakens the noise cancelling. A few owners complain about the companion app and about customer support. There are too few of these accounts to judge, and the comments don't say what went wrong.
The long-term evidence is thin. Most of these comments are early impressions and comparisons with other headphones, not reports from people who have used a pair for years. Nobody describes how the headband, hinges, pads or battery hold up over time, so we can't yet say whether the flimsy feel leads to actual breakage.
From 2 owner accounts that said how long they have had it. Own one? Add how long yours has lasted.
Counted from the owners who raised each subject, not from everyone. A subject is judged once at least 4 owners raise it.
37 more subjects came up from fewer than 4 owners each, which is not enough for a fair reading. To see how it stacks up, compare it with another machine.
The same owner, asked again at each point. Fills in as owners answer.
Two questions: how long you have had it, and anything you would like to say about it. Then we ask again as it ages. This helps our mission.
More in headphones and earbuds: Sennheiser Momentum 4, Sony XM6, Sennheiser M5.
Among the 2 owner accounts here that gave a duration, 1 described a failure. Parts named most: ANC feedback microphone.
Before you buy one used, ask the seller: how old it is, whether it was ever repaired and by whom, and whether any of the parts above have been replaced. Ask to see it run. A receipt tells you the warranty start date; most makers honour the term only for the first owner.
Public discussions we read and summarised in our own words. Nothing here was submitted to Still Kicks.
Counted from public accounts by people who said they own it, and summarised by Still Kicks in its own words. Not a manufacturer claim, a lab test or an estimate.
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