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Product Snapshot
🎧 Audiophile-Grade Wireless Headphones – Neutral, lifelike sound with wide soundstage
🔇 Adaptive Active Noise Cancellation – Blocks distractions without affecting clarity
🎼 42 mm In-House Transducer – Detailed mids, controlled bass & smooth treble
📡 Hi-Res Wireless Audio – Supports aptX™ Adaptive & aptX™ HD
🔌 BTD 700 USB-C Bluetooth® Dongle Included – Unlocks high-resolution wireless on most devices
🎚️ Parametric EQ + Crossfeed – Advanced sound control via Smart Control Plus App
🔋 Up to 60 Hours Battery Life – Designed for long listening sessions & travel
🔗 Multi-Connectivity – Bluetooth 5.2, USB-C & 3.5 mm analog input
🧠 Transparency Mode – Hear surroundings instantly
☁️ Premium Comfort – Lightweight (311 g), plush leatherette earpads & soft headband
🎒 Travel-Ready – Fold-flat design with protective carrying case
Description
🎧 Sennheiser HDB 630 Audiophile-Grade Wireless Headphones with Active Noise Cancellation
Experience high-fidelity sound without limits. The Sennheiser HDB 630 redefines wireless listening by combining studio-grade accuracy, adaptive noise cancellation, and luxurious comfort — all in one closed-back design. Paired with the BTD 700 Bluetooth® USB-C Dongle, it delivers true Hi-Res wireless sound with aptX™ Adaptive and aptX™ HD support across a wide range of devices.
🔊 Pure Audiophile Sound — Anywhere
Engineered for critical listeners, the HDB 630 features an in-house 42 mm transducer that delivers lifelike mids, rich detail, and a natural soundstage. The neutral tuning offers balanced bass, articulate vocals, and smooth treble for hours of fatigue-free listening.
⚙️ Hi-Res Wireless with the BTD 700 Dongle
The included BTD 700 Bluetooth® USB-C Dongle unlocks high-resolution wireless playback on phones, laptops, and tablets. With aptX™ Adaptive and aptX™ HD, you’ll experience pristine detail, improved dynamics, and a wider soundstage — no matter what device you’re using.
🎚️ Advanced Sound Control
Customize your listening with precision using the Smart Control Plus App.
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Parametric Equalizer: Fine-tune frequencies to your taste for truly personalized audio.
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Crossfeed Feature: Brings natural stereo balance to classic hard-panned mixes.
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Transparency Mode: Stay aware of your surroundings when you need to.
Every element is engineered to keep your music pure and distortion-free — whether through Bluetooth, USB-C, or the included 3.5 mm analog cable.
🔇 Adaptive Noise Cancellation
Block out distractions without compromising audio fidelity. Sennheiser’s Adaptive ANC preserves clarity and balance, ensuring a natural, distortion-free experience even in noisy environments. Switch to Transparency Mode to blend in external sounds when required.
🔋 Battery Life & Comfort That Go the Distance
With an impressive 60-hour battery life, the HDB 630 is built for long-haul listening. Plush leatherette earpads, a lightweight 311 g design, and a refined Japanese leatherette headband ensure all-day comfort. Whether you’re traveling, working, or unwinding, these headphones deliver luxury and endurance in equal measure.
🧠 Why the HDB 630 Stands Out
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Neutral, balanced audiophile tuning with a wide soundstage
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aptX™ Adaptive & aptX™ HD for true Hi-Res wireless playback
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BTD 700 Bluetooth® Dongle for high-fidelity across devices
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USB-C or analog input for lossless wired listening (up to 24-bit / 96 kHz)
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Smart Control Plus App for full sound customization
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Up to 60 hours battery life with adaptive ANC
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Premium materials for long-term comfort
The HDB 630 brings audiophile-grade performance to the modern wireless world — uncompromising sound, elegant design, and intelligent control in one masterpiece.
📋 Specifications
| Feature | Details |
|---|---|
| Model | Sennheiser HDB 630 |
| SKU | 700445 |
| Design | Closed-back, over-ear |
| Transducer Type | Electrodynamic (moving coil) |
| Driver Size | 42 mm |
| Weight | 311 g (without cable) |
| Frequency Response | 6 Hz – 40 kHz (USB/aptX Adaptive); 6 Hz – 22 kHz (standard) |
| Impedance | 480 Ω (active) |
| Sound Pressure Level (SPL) | 105 dB (1 kHz / 0 dBFS) |
| THD | <0.2% (1 kHz / 100 dB SPL) |
| Connectivity | Bluetooth 5.2, USB-C, 3.5 mm analog |
| Codec Support | aptX™ Adaptive, aptX™ HD, aptX™, AAC, SBC |
| Resolution | Up to 24-bit / 96 kHz (USB-C / Analog / BTD 700) |
| Battery Life | Up to 60 hours |
| Ear Pad Material | Leatherette (synthetic) |
| Included Accessories | BTD 700 USB-C Dongle, 1.2 m USB-C Cable, 1.2 m 3.5 mm Audio Cable, In-Flight Adapter, Carry Case |
| App Support | Sennheiser Smart Control Plus |
Model: Sennheiser HDB 630
SKU: 700445
Headphone Type: Over-ear, closed-back
Transducer Type: Electrodynamic (moving coil)
Driver Size: 42 mm
Acoustic Design: Closed-back
Frequency Response:
6 Hz – 40 kHz (USB / aptX™ Adaptive / 96 kHz)
6 Hz – 22 kHz (standard playback)
Sound Pressure Level (SPL): 105 dB (1 kHz / 0 dBFS)
Impedance: 480 Ω (active)
Total Harmonic Distortion (THD): <0.2% (1 kHz / 100 dB SPL)
Connectivity:
Bluetooth® 5.2
USB-C (audio + charging)
3.5 mm analog input
Bluetooth Codec Support: aptX™ Adaptive, aptX™ HD, aptX™, AAC, SBC
Resolution: Up to 24-bit / 96 kHz (USB-C / Analog / BTD 700 Dongle)
Noise Cancellation: Adaptive Active Noise Cancelling (ANC)
App Support: Sennheiser Smart Control Plus (EQ, Crossfeed, ANC control)
Battery Life: Up to 60 hours (with ANC)
Charging Port: USB-C
Weight: 311 g (without cable)
Ear Pad Material: Premium leatherette (synthetic)
Headband Material: Japanese leatherette
Color: Black / Silver
Compatibility: Android, iOS, Windows, macOS, USB-C devices
What’s in the Box
Sennheiser HDB 630 Wireless Headphones
BTD 700 Bluetooth® USB-C Dongle
1.2 m USB-C to USB-C cable (for audio and charging)
1.2 m analog audio cable with 3.5 mm plug
In-flight adapter
Premium carrying case
Quick start guide and documentation
Warranty Period: 2 Year from the date of Invoice
Covered: Manufacturing Defects Only
Website: https://en-in.sennheiser.com/service-support-contact-service-centers-in-india
Contact No: 1800 22 36 32
Email Id: in-info@sennheiser.com
Sennheiser is a well-known brand in the audio industry. They offer a wide range of products catering to both audiophiles and casual listeners. Their products include open back and closed back audiophile headphones, in-ear monitors, ANC headphones, and true wireless earbuds. They are known for their exceptional sound quality and durability. Whether you're a professional musician or just a music enthusiast, Sennheiser has something for everyone.
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The hype is real with HDB 630, this is a great bet if anyone prioritize audiophile sound quality, clarity, comfort along with flexibility of going wireless — especially if one care about fidelity and critical listening at home or on the go, however if anyone wants thumping bass or top-tier noise-cancelling, then might find it a bit restrained.
But there comes its industry first 5 band PEQ in a bluetooth headphone, Sennheiser has basically given us a blank canvas to customize its FR to anyones taste, its 5 band but its enough to make the sound curve the way we like.
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I upgraded to Truthear Hexa from Kiwi ears cadenza and my impressions are as follows:
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The Highs: The high frequencies are sweet and extended. There is plenty of detail and air up top, but it manages to remain smooth and entirely free of any harsh, fatiguing sibilance.
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