Sennheiser HDB 630 Closed-Back Wireless Around-Ear Headphones with ANC and BTD 700 Bluetooth Adapter

BH #SEHDB630 • MFR #700445
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Sennheiser HDB 630 Closed-Back Wireless Around-Ear Headphones with ANC and BTD 700 Bluetooth Adapter
Key Features
  • Large 42mm Dynamic Drivers
  • Bluetooth Wireless aptX Adaptive and HD
  • BTD 700 Bluetooth Adapter
  • Up to 24-Bit / 96 kHz Lossless via USB-C
Experience audiophile sound and comfort with the Sennheiser HDB 630 Closed-Back Wireless Around-Ear Headphones with Adaptive Noise Cancellation and BTD 700 Bluetooth Adapter. With components designed to work together in perfect harmony, you will enjoy hi-res sound with powerful noise cancellation and 60-hour battery life while listening to wireless Bluetooth or lossless USB-C wired audio.
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Sennheiser HDB 630 Overview

From Manufacturer

Experience audiophile sound and comfort with the Sennheiser HDB 630 Closed-Back Wireless Around-Ear Headphones with Adaptive Noise Cancellation and BTD 700 Bluetooth Adapter. With components designed to work together in perfect harmony, you will enjoy hi-res sound with powerful noise cancellation and 60-hour battery life while listening to wireless Bluetooth or lossless USB-C wired audio.

Audiophile Tuning
Sennheiser's in-house 42mm transducer and refined acoustic design deliver a neutral audiophile sound with lifelike mids, stunning detail, and a wide, natural soundstage. Minimal digital processing ensures pure fidelity true to the original recording.
Wireless or Wired
Enjoy high-resolution wireless sound with support for aptX HD and aptX Adaptive, especially when paired with the included BTD 700 Bluetooth adapter. For maximum purity, connect via USB-C for lossless listening up to 24-bit / 96 kHz.
Parametric EQ
Expert-level equalization lets you define frequency bands, widths, and filters to precisely shape your sound. Tailor bass, enhance vocals, or fine-tune for any genre, just like a mastering engineer.
Adaptive ANC and Transparency Mode
Powerful noise cancellation blocks distractions without degrading clarity, dynamics, or balance. Transparency Mode instantly lets in surrounding sounds when you need to stay aware.
Listen for Days
A class-leading 60-hour battery keeps you going through long trips or work weeks. Just 10 minutes of fast charging adds up to 7 hours of playtime, ideal for when you're on the move.
Refined Acoustic Architecture
Every part of the acoustic chain, from the transducer to the transparent acoustic mesh, to the optimized back volume, works in harmony to produce smooth upper mids, detailed treble, and an open, natural soundstage.
Proven Comfort
Lightweight build, low clamping force, generous earcups, and premium Japanese leatherette headband ensure hours of fatigue-free listening.
UPC: 810091273548

Sennheiser HDB 630 Specs

Key Specs
Wearing Style
Dual Ear with Headband
Earpiece Swivel: Yes
Earpiece Design
Over-Ear (Circumaural)
Active Noise Cancellation
Yes
Frequency Response
6 Hz to 40 kHz
Built-In Controls
No
Sensors
No
Noise Cancelling Microphone
Yes
Number of Voice Mics
4 with Beamforming
Runtime
60 Hour (BT+ANC)
Headphone
Wearing Style
Dual Ear with Headband
Earpiece Swivel: Yes
Earpiece Design
Over-Ear (Circumaural)
Open/Closed-Back
Closed-Back
Sound Field
Stereo
Number of Drivers
1 per Earpiece
Driver Type
Dynamic
Driver Size
1.7" / 42 mm
Impedance
480 Ohms (Active)
Active Noise Cancellation
Yes
Frequency Response
6 Hz to 40 kHz
Sensitivity
105 dB SPL at 1 kHz
Maximum Power Handling
10 mW
Volume Limiting / Child-Safe
No
Built-In Controls
No
Sensors
No
Microphone
Built-In Mic
Yes (on Earpiece)
Noise Cancelling
Yes
Number of Voice Mics
4 with Beamforming
Type
MEMS
Frequency Response
50 Hz to 10 kHz
Connectivity
Wireless
Bluetooth 5.2
Supported Audio Codecs
AAC, aptX, aptX Adaptive, aptX HD, SBC
Bluetooth Profiles
A2DP, AVRCP, HFP
Wired Audio Connector
1x USB-C
Audio Connector to Earpiece
USB-C (Shared with Charging Port)
Mobile App Compatible
Yes: Android & iOS
App Name: Sennheiser Smart Control Plus
Battery
Runtime
60 Hour (BT+ANC)
Quick Charging Times
10 Minutes for 7 Hours
Recharge Time
2 Hours
Battery Chemistry
Lithium-Ion
Capacity (mAh)
700 mAh
Charging Case
Charging Input
USB-C
Wireless Charging
No
Physical
Color
Black / Silver
Environmental Resistance
No
Dimensions
7.7 x 7.1 x 2" / 195 x 180 x 51 mm
Weight
11 oz / 312 g
Packaging Info
Package Weight
2.3 lb
Box Dimensions (LxWxH)
8.7 x 8.1 x 3"

Sennheiser HDB 630 Reviews

Nice headphones for everyday listening in noisy env

By Vladyslav
Rated 5 out of 5
Date: 2026-04-24

Clean sound, and the high build quality is what you would expect from Sennheiser.

Without Equalization They're Hard to Enjoy

By Adam
Rated 4 out of 5
Date: 2026-01-28

For reference, I like accuracy and dislike midrange/low-treble. My favorite headphones are Sennheiser Amperior. My everyday stereo is Genelec 8030/7050 via Topping E70. The midrange is in my face. The low treble likewise. Bass is a bit muddy. Highs are a bit reedy. I wouldn't say I really like them. After some equalization they get a lot better. Still a bit harsh. As I have read elsewhere, they are not loud. Aware mode is weird. Am hoping I can further dial them in and enjoy them for the following reasons. 1) Controls are much easier to use than I expected and far better than other touch controls I've used. 2) Range is fantastic. Basement + 2 floors and a small addition all covered by the dongle. 3) They stay in place very well. 4) And, the noise cancelling is very good. My cat can be meowing right next to me and I hardly hear with the music playing. I don't hear my clacky keyboard either. Overall, I think they're overpriced. I hope I didn't waste money and won't end up throwing them in a drawer. 7.5/10

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