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Sennheiser HDB 630 Wireless Noise Cancelling Headphones

SKU:
HDB630/BK
$699.95
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Description

Sennheiser HDB 630

Audiophile Sound, Cut Loose

 
 
You want it all. High resolution, neutral tone, extra-long battery life, active noise cancellation, and of course, no more cables. Meet the closed-back HDB 630. With the included BTD 700 Bluetooth® USB C Dongle, you’re free to enjoy glorious audiophile sound anywhere you go.
 
While most wireless headphones on the market are tuned with a mainstream V-shaped sound signature that boosts bass and treble, the HDB 630 is exquisitely neutral and balanced, ideal for more critical listening. Season to taste with advanced equalization options in the Sennheiser Smart Control Plus App
 
  • Sennheiser’s in-house 42 mm transducer delivers neutral sound with lifelike mids, stunning detail, and a wide soundstage.
  • Enjoy support for aptX™ HD and aptX™ Adaptive, especially when paired with the included BTD 700 Bluetooth® USB C Dongle.
  • For the purest signal, connect via USB C or analog input for lossless listening at up to 24 bit/96 kHz.
  • Parametric equalizer for advanced equalization and the crossfeed feature give you complete control of your sound.
  • Powerful adaptive noise cancellation blocks distractions without degrading clarity, dynamics, or balance.
  • Listen for days, not hours, with up to 60 hours of battery operation.
 
 
Turning audiophile sound on its head
Serious listening used to require a serious amount of equipment. The HDB 630 changes the rules. 
 
The pursuit of audiophile sound can get a bit gear intensive. High-end DACs, balanced cables, big tube amps. Not exactly stuff you bring on a walk around the block. But now you can have your high fidelity and carry it, too — with all the conveniences of state-of-the-art wireless headphones.
 
Plus, thanks to the included BTD 700 Bluetooth® USB C Dongle, you can finally get high-resolution wireless sound from a wide range of devices including most phones, tablets, and laptops. No matter which codecs your device supports, you can enjoy brilliant aptX™ Adaptive with your HDB 630 and the dongle, since it’s an upgrade that makes your smartphone capable of delivering hi-res quality to your headphones.
 
 
A perfectly orchestrated acoustic chain
Each component has been carefully crafted to work in harmony, revealing details you’ve never heard from wireless headphones before. 
 
Neutral yet detailed mids make it feel like singers are performing right in front of you. A wide soundstage further enhances the feeling of being there with the musicians.
 
At the heart of the HDB 630 is a 42 mm dynamic transducer, precision-built at our state-of-the-art Tullamore, Ireland facility. It’s tuned for fidelity, not hype — with smooth mids, intimate vocals, and fast, controlled dynamics that keep your head nodding. 
 
But carefully tuned, neutral, high-res sound like this requires acoustics, mechanics, materials, and electronics that complement each other perfectly. Our engineering team optimized every part of the acoustic chain from the transducer to the transparent mesh in the baffle to work together with exceptional balance and clarity.
 
The deep back volume and new acoustic mesh, for example, ensure smooth upper mids and lower treble. The result is a natural and balanced sound experience typically unseen in a closed headphone. But the HDB 630 achieves this with a closed back. Combined with outstanding adaptive noise cancellation, it gives you the ability to enjoy high fidelity anywhere with no distractions.
 
 
Parametric equalizer
The precision to get exactly what you want. 
 
Previous equalizers only provided limited benefits, whereas our new parametric equalizer gives you full flexibility to adjust your sound exactly to your needs. The parametric equalizer available via the Smart Control Plus App lets you shape your sound exactly how you like it — down to the smallest detail.
 
A standard graphic equalizer lets you boost or cut within preset frequency bands — handy for quick adjustments, but not ideal if those bands aren’t exactly where you want them. The HDB 630’s parametric equalizer puts you in the driver’s seat: you can set the exact frequency range you prefer, control the bandwidth to make that adjustment wide or narrow, and choose the filter type for even more precise shaping. This flexibility lets you tailor vocals to your preference, adjust brightness, or fine-tune bass — without affecting the rest of your music. It offers a level of control rarely seen in wireless headphones, perfectly complementing the audiophile tuning. Whether you’re an enthusiast chasing the ideal audio or simply exploring, full parametric control lets the HDB 630 match your personal definition of perfect sound.
 
The parametric equalizer, crossfeed and more features like your ANC settings, advanced sound quality settings and firmware updates are all available in the Sennheiser Smart Control Plus App.
 
 
Stay comfortable and stay connected
A great headphone should take even epic playlists in stride. 
 
With up to 60 hours of battery life, you can listen to music, podcasts, or videos literally for days. Go on a week-long trip, crush it in marathon work sessions, or binge videos on your tablet. And never have to think about charging once.
 
But for this level of endurance, the fit and feel have to be just right. That’s why the HDB 630’s earcups are generously sized with earpads that feel as luxurious as they look. The headband is wrapped in refined Japanese IDEATEX leatherette. Low weight and a gentle clamping force make these headphones a joy to wear, even if you’re listening for hours. It’s that elusive blend of long-haul performance and all-day comfort that will ensure these become your new favourite daily driver headphones.
 
 
Sound signature
Why the HDB 630 sounds exquisitely neutral. 
 
Unlike most mainstream consumer wireless headphones, HDB 630’s tuning is all about balance: fast and extended bass, clear lifelike mids, and controlled treble that keeps the music feeling open and natural.
 
The HDB 630’s curve compared to the MOMENTUM 4 shows how audiophile tuning changes the listening experience. Notice the low end: The HDB 630’s sub-bass and mid-bass are quick and controlled, staying closer to neutral. This reduces any “masking” effects that can hide vocal detail. Moving into the lower mids, the HDB 630 remains smooth and even, keeping voices present and lifelike.
 
In the upper mids, there’s a tasteful lift that gives vocals a richer, more intimate presence, balanced by a still-neutral bass foundation. The treble region keeps that balance, adding a sense of air without harshness — something you can see in the rise before 10 kHz, which helps improve the perception of a natural, open space around instruments.
 
The result is a frequency response tuned for speed and clarity in the bass, lifelike mids, and controlled treble — all without the peaks or dips that can cause listening fatigue. It’s a more neutral, refined take on Sennheiser’s wireless sound that makes long sessions and critical listening a unique pleasure.
 
 
 

What's in the Box

  • HDB 630 Closed-Back Wireless Headphones
  • BTD 700 Bluetooth® USB C Dongle
  • 1.2m USB C-C audio and charging cable
  • 1.2m audio cable with 3.5 mm plug
  • In-Flight Adapter
  • Carrying Case
  • User Information
  • 2-Year Warranty


Specifications

Article number (SKU)
700445

Weight
311 g without cable

Audio cable
1.20 m cable with 3.5 mm plug, detachable, right side

USB cable
1.20 m with C-to-C connection

Ear coupling
Over-ear

Ear pad material
Leatherette (synthetic)

Resolution
Up to 24 bit / 96 kHz with USB-C, analog input or BTD 700 Bluetooth® USB C Dongle

Connectivity
Bluetooth 5.2

Codec support
aptX™ Adaptive™, aptX™ HD, aptX™, AAC, SBC

Frequency response
USB: 6 Hz - 40 kHz (only when using Line-In, USB (96 kHz) or Bluetooth with aptX adaptive (96kHz), 6 Hz - 22 kHz (otherwise)

Nominal impedance
Active 480 Ω

Sound pressure level (SPL)
105 dB (1 kHz / 0 dBFS)

THD, total harmonic distortion
<0.2 % (1 kHz / 100 dB SPL)

Acoustic design
Closed-back

Transducer
Electrodynamic (moving coil)
 

For hygienic reasons, there are no returns on headphones once opened.

All in-stock headphones are available for personal demonstration in-store. We encourage you to try before buying to ensure satisfactory sound, fit, and functionality.

If an item is defective upon receipt, please notify us within 30 days of purchase so we can arrange an exchange. For issues following 30 days, we will work with you and the manufacturer within the scope of each brand’s warranty and service policies.

Specs

Dimensions

About Sennheiser

Warranty

This Sennheiser Audiophile product includes a 2 Year Manufacturer's Warranty.

Where possible and inventory permits, Bay Bloor Radio can assist with facilitating warranty claims with Sennheiser for products purchased at our store.


These warranty periods begin on the date of purchase of brand-new, unused products by the first end user and only applies to the original purchaser (first end user purchasing the product). Please retain your sales receipt (or your warranty certificate) as proof of purchase. Unless you submit a copy of your proof of purchase, which will be verified by your local Sonova Consumer Hearing GmbH service partner, you will be obliged to pay for any repairs that are carried out. Proof of purchase must state the date of purchase, point of purchase and name of the product.

If, within the applicable warranty period, the product is determined to have an original defect due to improper materials or workmanship, Sonova Consumer Hearing GmbH or their service partners will, without charge for labour or parts, repair or (at the discretion of Sonova Consumer Hearing GmbH) replace the product or its defective parts. Sonova Consumer Hearing GmbH may also at its discretion provide a partial or full credit of the original purchase price in exchange for the returned product.

Sonova Consumer Hearing GmbH or its service partners may replace defective products or parts with new or refurbished products or parts. All products and parts replaced become the property of Sonova Consumer Hearing GmbH or its service partners.

The following cases are not covered by the above warranties:

  • minor faults or deviations in the quality of a product which do not affect the product’s value or fitness for its intended purpose any accessories supplied with the product
  • rechargeable or disposable batteries (these products have a shorter service life, the length of which also depends on the frequency of use)
  • faults resulting from improper use (e.g. operating errors, mechanical damage, incorrect operating voltage) Proper use for the purposes of these warranties are defined as use of the product under the conditions stated in the instructions for use
  • faults due to wear and tear
  • any modification of products effected by the end user or a third party, unless Sonova Consumer Hearing GmbH has given its prior written consent to the nature and extent of the modification. For the avoidance of doubt, approved modifications will not void the warranty.
  • faults due to force majeure
  • faults of which the purchaser was already aware at the time of purchase

All warranty claims become void if the product is tampered with by unauthorised persons or repair shops. Further, these warranties are voided by removal or alteration of identification labels, serial numbers or safety labels on the product or its parts.

Full warranty details: https://www.sennheiser-hearing.com/en-CA/warranty-conditions

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