TAS Commitment
Product Snapshot
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.
-
Parametric Equalizer: Fine-tune frequencies to your taste for truly personalized audio.
-
Crossfeed Feature: Brings natural stereo balance to classic hard-panned mixes.
-
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
-
Neutral, balanced audiophile tuning with a wide soundstage
-
aptX™ Adaptive & aptX™ HD for true Hi-Res wireless playback
-
BTD 700 Bluetooth® Dongle for high-fidelity across devices
-
USB-C or analog input for lossless wired listening (up to 24-bit / 96 kHz)
-
Smart Control Plus App for full sound customization
-
Up to 60 hours battery life with adaptive ANC
-
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 |
You May Also Like
Recently Viewed
OUR HONEST REVIEWS FROM THE CO-FOUNDERS & AUDIOPHILES
View all
TRUSTED BY OVER 75,000+ MUSIC ENTHUSIASTS
Let customers speak for us
Pairing this Harman Target Version with a Samsung A17 playing Apple Music and FLAC files and Fiio X1 DAP as a secondary source with FLAC files. When tuned to give preference to Mids as i prefer to hear the voices more than anything else, this comes out as a sweet sounding combination and tracks like Racy Chapmans Fast Car and Massive Attacks Teardrop shine beautifully. The Castor Pros are best listened at about 40% volume and and infact they do actually sound amazing at a high volume for bass heavy tracks such as EDM but for Trance and Rock the cymbals and snare drums sound better at 40%. This pair of iems and the combo sounds like money well spent so far and next i want to try analytical IEMs like the 7Hz. Thanks to the Audio Store for the rushed delivery.
Great purchase... excellent product
Good Product as expected
Worth every penny! This is not for bassheads as it lacks just a bit on the bass department, but the separation is awesome and the sound stage is also huge. Awesome for gaming as well! (Apex Legends, Arc Raiders, PUBG)
This is the replacement for my purchase of moon drop dsp chu2 which I bought in aug 2025 i don't know how it got damaged from last it stopped working on left side buds and after a few days mic also stopped working and i forgot to claim the warranty for it . So find this spare cable very helpful since I love these IEMS for real Tq AUDIO STORETEAM FOR THE smooth delivery
Great job on packing of the product. As a gamer I can say that, for fps games like PUBG , CS2 etc., Castor Pro is the best in under ₹2000
I recently bought this and am incredibly impressed with it. The build quality feels solid and premium right out of the box.
When it comes to performance, the amplification is fantastic—it delivers a clear, noticeable boost to the audio power and volume without sacrificing clarity. It is also incredibly easy to use; completely plug-and-play with zero hassle.
An awesome bonus is the inclusion of the Type-A to Type-C dongle/adapter. It makes it incredibly versatile to connect to different devices right away without needing to buy extra accessories.
Overall, it's a great purchase and definitely worth the money. If you are on the fence, just get it!
As an all rounder it fits my taste quite well,the only problem it really has is the male vocals being a bit recessed (not terribly recessed if you use vocal eartips),they are a tad bit overpriced seemingly,divine planar might be better,but for people looking for a fun entry into iem's,it's worth the price (some people say it's included DAC isn't enough,it works well enough as a temporary solution,yet to test if a dac makes a big difference or not).
Unsure if this is how most iem's are but the cable felt a tad bit short.
I had never used an IEM before, so this was my very first experience and I was genuinely impressed. As someone who loves music, I can confidently say this is one of the best investments you can make for audio quality. The sound is exceptional and absolutely worth the price.
To get the best possible audio experience, I would also recommend pairing it with a good-quality DAC, as it significantly enhances the overall output. ....
This is the most balanced sounding IEM I've used in this price. I am using the Type C variant, and I haven't experienced any issue regarding the playback whatsoever. It is equipped with the DAC chip CX31993, which is found on the dedicated DACs around the price of 1K. The cable is also a 4-core silver plated copper one, with really nice build quality. These are also really responsive to EQ Settings, tweaking the audio balance using a 10 or 31 band EQ makes the experience even more versatile.
The only cons I have noticed are regarding the in-box ear tips, I didn't find them to be very comfortable, so I had switch them with some other ear tips. Although, the metal built of the IEMs give them a really premium feeling, the glossy surface is extremely prone to scratches and they still get scratched even after using cautiously.
It is good but could be a bit sharp sometimes may be balanced by EQ. But one problem in my type C unit, after 3 days it stop sound out of nowhere, while listening music, or watching movie/yt. Have to plug out plug in to get the audio back.
This is a magical DAC, I don’t believe ki isne mere headphones main jaan daal di ho
Really the quality of aurora ultra is out of the box , literally if you never use an iem and experience first time you feel actual music. Aurora ultra give life best experience.
This is only possible because of the audio that my first experience and the audio store surve there best to just create my best experience thanks a lot for protective, timely delivery and
Again thanks for giving that service and seamless experience to the team
AUDIOCULAR DAC Recommend asome sound quality it's pushing
Aswome experience with kz castor pro harman target Bass edition I never heard that quality of
Bass My second experience with iem aswome
