Sennheiser HDB 630 Wireless Headphones

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