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Sennheiser HDB 630 specifications and in-depth review

Sennheiser HDB 630

Manufacturer: Sennheiser

The Sennheiser HDB 630 is an over-ear headphone that combines wireless and wired connectivity in a foldable, travel-ready design. It ships with a travel bag and a 1.2-metre detachable, tangle-free cable, making it a practical option for users who move between listening setups. With a weight of 311 g, the headphone is built around stereo speakers and supports use as a headset, broadening its day-to-day versatility.

On the technical side, the HDB 630 operates over Bluetooth 5.2 with support for aptX Adaptive, aptX HD, aptX, and AAC codecs, though it does not include LDAC or LE Audio. The maximum wireless range reaches 10 metres. Audio performance is shaped by a 42 mm driver unit spanning a frequency range of 6 Hz to 22,000 Hz, a sound pressure level of 105 dB/mW, and a notably high impedance of 480 Ohms. Battery life is rated at 60 hours from a rechargeable cell charged via USB Type-C, and a battery level indicator is included. Passive noise reduction is present, while active noise cancellation and ambient sound mode are not.

Pros
  • Exceptionally long 60-hour battery life reduces how often the headset needs to be recharged
  • Supports aptX Adaptive, aptX HD, and aptX codecs, offering a range of high-quality wireless audio options
  • Foldable design combined with an included travel bag makes it practical to carry and store
  • Detachable and tangle-free cable adds flexibility for wired use and easier cable management
  • Wide frequency range of 6 Hz to 22,000 Hz covers the full audible spectrum and beyond
  • Can function as a headset, extending its use to calls and communication
Cons
  • High impedance of 480 Ohms may require a dedicated amplifier to drive properly
  • No active noise cancellation limits usefulness in loud environments
  • Maximum Bluetooth range of only 10 metres restricts wireless freedom
  • No NFC or fast pairing support makes the initial connection process less convenient
  • Lacks wireless charging, so it must always be plugged in via USB-C to recharge
  • No in-line control panel means playback and volume adjustments cannot be made from the cable
Who is this for?

The HDB 630 is well suited to home or studio listeners who want a versatile over-ear headphone with both wired and wireless options. Its 60-hour battery life makes it a strong fit for users who need extended listening sessions without frequent recharging. The inclusion of aptX Adaptive and aptX HD support appeals to those who prioritize higher-quality wireless audio transmission, while the foldable build and included travel bag make it a practical companion for users who occasionally need to transport their gear. Its headset capability also makes it suitable for those who combine listening with voice calls.

Who is this NOT for?

The HDB 630 is not well suited to users who need to listen in loud or distracting environments, as it offers no active noise cancellation and relies solely on passive isolation. Its 480-ohm impedance means it will underperform when driven by smartphones or low-powered portable devices without a dedicated amplifier, making it a poor match for casual on-the-go listeners expecting plug-and-play convenience. Users who prefer a streamlined wireless experience may also find the absence of fast pairing and NFC frustrating, and those accustomed to managing playback directly from the cable will miss the lack of an in-line control panel.

Design:

Fit Over-ear
weight 311 g
has a detachable cable ✓
water resistance None
can be folded ✓
is designed for kids ✕
has a tangle free cable ✓
travel bag is included ✓
has an open-back design ✕
cable length 1.2 m
has stereo speakers ✓

The Sennheiser HDB 630 uses an over-ear fit and weighs 311 g, striking a balance between presence and portability. It can be folded for easier storage and comes with a travel bag included, making it well suited for transport. The headphone features a detachable, tangle-free cable measuring 1.2 metres in length, and its closed-back design supports passive isolation. Stereo speakers are built in, and the headphone is not intended for children. Water resistance is not provided.

Sound quality:

has active noise cancellation (ANC) ✕
lowest frequency 6 Hz
highest frequency 22000 Hz
driver unit size 42 mm
impedance 480 Ohms
supports spatial audio ✕
sound pressure level 105 dB/mW
has a neodymium magnet ✕
has passive noise reduction ✓

The HDB 630 uses a 42 mm driver unit and covers a frequency range from 6 Hz to 22,000 Hz, with a sound pressure level of 105 dB/mW. Its impedance is rated at 480 Ohms, which places it firmly in high-impedance territory. Passive noise reduction is present, while active noise cancellation and spatial audio are not supported. The driver does not use a neodymium magnet.

Power:

Battery life 60 hours
Has USB Type-C ✓
has a battery level indicator ✓
has wireless charging ✕
Has a solar power battery ✕
has a rechargeable battery ✓
has a removable battery ✕

The HDB 630 is equipped with a built-in rechargeable battery rated for 60 hours of battery life, and it charges via USB Type-C. A battery level indicator is included so users can monitor remaining charge. The battery is not removable, and neither wireless charging nor solar charging is supported.

Connectivity:

connectivity Wireless & wired
Bluetooth version 5.2
has aptX Adaptive ✓
has aptX ✓
has LDAC ✕
has LDHC ✕
has Bluetooth LE Audio ✕
has aptX Low Latency ✕
has aptX HD ✓
has aptX Lossless ✕
has AAC ✓
has Auracast ✕
maximum Bluetooth range 10 m
has fast pairing ✕
supports Bluetooth pairing using NFC ✕

The HDB 630 supports both wireless and wired connectivity, with Bluetooth 5.2 handling the wireless side at a maximum range of 10 metres. Codec support includes aptX Adaptive, aptX HD, aptX, and AAC, while LDAC, LDHC, aptX Low Latency, and aptX Lossless are not available. Bluetooth LE Audio and Auracast are not supported, and the headphone does not offer fast pairing or NFC-based pairing.

Features:

has ambient sound mode ✕
has in/on-ear detection ✕
has a mute function ✕
can be used as a headset ✓
Has an in-line control panel ✕

The HDB 630 can be used as a headset, making it suitable for calls in addition to audio playback. It does not include ambient sound mode, in/on-ear detection for automatic pause, a mute function, or an in-line control panel.

Final Verdict

The Sennheiser HDB 630 is a well-specified over-ear headphone that targets users who value extended wireless listening with access to higher-quality audio codecs. Its 60-hour battery life and broad codec support — including aptX Adaptive and aptX HD — give it a clear identity as a home or desktop-oriented wireless headphone built for sustained use. That said, its high impedance and absence of active noise cancellation mean it is best appreciated in controlled listening environments with appropriate source equipment. For users whose needs align with those conditions, the HDB 630 presents a technically capable and practically designed option worth serious consideration.

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