Sennheiser
Sennheiser HDB 630 Wireless Headphones
Sennheiser HDB 630 Wireless Headphones
Sennheiser HDB 630 Wireless Headphones
Cup style
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Open-back headphone designs are often higher-performance but have poor noise isolation and leak sound. Closed-back designs provide better noise isolation and leak less sound.
Closed-Back
Wearing style
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Over-ear headphones sit over your ear and surround your ear with a ring of padding. On-ear headphones are padded but rest on top of your ear. In-ear monitors are worn inside your ear canal.
Over-ear
Driver type
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Speakers and headphones use a device called a 'driver' to create sound. Different types of drivers have different strengths and weaknesses, but can all produce great sound. Common varieties include dynamic, planar magnetic, and electrostatic.
Dynamic
Connectivity
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Connectivity refers to the method in which the headphones connect to the audio source. Headphones can be either wired or wireless.
Wireless, Wired
Portability
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DACs and amplifiers can either be carried around or meant for static desktop use
Portable
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Description
Enjoy high-resolution, neutral sound — anywhere
Meet the Sennheiser HDB 630 Wireless Headphones — a closed-back, over-ear design that delivers true audiophile performance with the freedom of wireless listening. Featuring Sennheiser’s in-house 42 mm transducer, advanced adaptive noise cancellation, and the included BTD 700 Bluetooth® USB-C Dongle, the HDB 630 brings reference-grade sound to your phone, tablet, or laptop. Enjoy up to 60 hours of battery life and studio-level control through the Smart Control Plus App’s parametric EQ and crossfeed tools.
Key Features
- Neutral, high-resolution tuning — 42 mm Sennheiser transducer delivers lifelike mids, precise detail, and an expansive soundstage.
- BTD 700 Dongle included — unlocks aptX™ HD and aptX™ Adaptive high-res Bluetooth for phones, tablets, and computers.
- Parametric EQ & Crossfeed — shape your sound and recreate speaker-like imaging using the Smart Control Plus App.
- Adaptive Noise Cancellation — powerful yet transparent, maintaining dynamics and tonal balance.
- Multi-connection options — USB-C, analog 3.5 mm, or Bluetooth 5.2 for lossless and wireless flexibility.
- All-day comfort — 311 g lightweight frame, plush leatherette pads, and up to 60 hours per charge.
Designed for true portable fidelity
Serious listening no longer requires racks of gear. The HDB 630 redefines portable audiophile sound with the same composure and neutrality enthusiasts expect from Sennheiser’s wired models. Pair the BTD 700 Dongle for instant hi-res performance across platforms and enjoy a complete acoustic chain engineered for balance, clarity, and realism — whether you’re at home, in the office, or on a flight.
Precision control with advanced DSP
Using the Smart Control Plus App, the HDB 630 gives you full parametric equalization and crossfeed control. Fine-tune frequency ranges, bandwidth, and filter types for exact tonal shaping — from subtle vocal refinement to bass extension. Crossfeed brings a natural stereo image to older recordings while preserving phase integrity, making these headphones uniquely capable for both critical and casual listening.
Comfort and endurance for every journey
A refined Japanese-leatherette headband, generous earpads, and low clamping force make long sessions effortless. With 60 hours of playback and rapid USB-C charging, the HDB 630 is built for marathon playlists, travel days, and studio-length editing sessions.
Sound signature: Neutral done right
The HDB 630’s tuning emphasizes fast, controlled bass, lifelike mids, and smooth treble that retains air without fatigue. Compared to the Momentum 4, it’s a more reference-oriented sound — less coloration, more precision, and a wider, more natural stage.
Technical Specifications
| Specification | Details |
|---|---|
| Article Number (SKU) | 700445 |
| Type | Closed-back, over-ear, wireless |
| Transducer | Electrodynamic (moving coil) |
| Driver Diameter | 42 mm (in-house Sennheiser) |
| Frequency Response | 6 Hz – 40 kHz (USB / Line-In / aptX Adaptive) |
| Nominal Impedance | 480 Ω (active) |
| Sound Pressure Level (SPL) | 105 dB (1 kHz / 0 dBFS) |
| THD | < 0.2 % (1 kHz / 100 dB SPL) |
| Resolution | Up to 24-bit / 96 kHz (via USB-C or BTD 700) |
| Connectivity | Bluetooth 5.2 / USB-C / 3.5 mm analog input |
| Codec Support | aptX™ Adaptive, aptX™ HD, aptX™, AAC, SBC |
| Noise Cancellation | Adaptive ANC with Transparency mode |
| Battery Life | Up to 60 hours (USB-C charging) |
| Weight | 311 g (without cable) |
| Ear Pad Material | Leatherette (synthetic) |
| Audio Cable | 1.20 m detachable 3.5 mm (right side) |
| USB Cable | 1.20 m USB-C to USB-C (audio + charging) |
| Included Dongle | BTD 700 Bluetooth® USB-C Dongle |
What’s in the Box
- HDB 630 closed-back wireless headphones
- BTD 700 Bluetooth® USB-C dongle
- 1.20 m USB-C to USB-C audio / charging cable
- 1.20 m audio cable with 3.5 mm plug
- In-flight adapter
- Carrying case
Compare to Similar Models
| Model | Design | Codec Support | Battery Life | Sound Signature | Price (USD) |
|---|---|---|---|---|---|
| Sennheiser HDB 630 | Closed-back Wireless Over-Ear | aptX Adaptive / HD / AAC / SBC | Up to 60 hours | Neutral Reference Tuning | $499 (estimated) |
| Sennheiser Momentum 4 | Closed-back Wireless Over-Ear | aptX Adaptive / AAC / SBC | Up to 60 hours | Warm Balanced | $379 |
| Bowers & Wilkins Px7 S2e | Closed-back Wireless Over-Ear | aptX Adaptive / AAC / SBC | Up to 30 hours | Warm Dynamic | $399 |
| Sony WH-1000XM5 | Closed-back Wireless Over-Ear | LDAC / AAC / SBC | Up to 30 hours | Smooth V-Shaped | $399 |
Frequently Asked Questions
Does the HDB 630 support high-resolution Bluetooth audio?
Can I use the HDB 630 wired?
How long does the HDB 630's battery last?
Which app controls the parametric EQ?
I'm new to EQ, what do I do?
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