Sennheiser HDB 630 Review: Truly premium sound or just overly priced?

Sennheiser HDB 630 Headphones: Late last year, Sennheiser launched its over-ear wireless headphones – the Sennheiser HDB 630 – in India at a price of Rs 44,990. With this hefty price tag, the German audio company claims this is a premium wireless headphone model with features such as Adaptive Hybrid ANC, 60 hours of playback on a single charge, Hi-Res wireless support, sound adjustments, and much more. But is it really worth the price, or is it just another expensive headphone in the market? Let's find out in this review.

Sennheiser HDB 630 Headphones: Let's talk about its case and what's inside the box

These over-ear wireless headphones come with a high-quality hardshell carrying case covered in fabric. Inside the box, you'll find

• Headphone: Sennheiser HDB 630
• Type C to type C cable: For charging and connecting
• User Manual: a guidebook on how to use the headphones
• Audio cable: This helps you use the device as a wired headphone
• Airplane adapter: This helps you use these headphones on an aeroplane
• Dongle: This can be used to experience high-quality audio if a particular device does not support headphones

This case looks extremely classy and is designed very smartly, as it has a separate compartment for each accessory. Also, we found this case travel-friendly, as for such an expensive product, we really needed a good hard cover that felt protective, but some people might find it a bit bulky, as it is almost 2 inches thick.

Sennheiser HDB 630 Headphones: Design

Not for Gen-Z or millennials, but the headphone is designed for those who appreciate cleanliness and classiness – matte black oval earcups, silver accents connecting the yokes to the headband, zero embellishments.

However, it's important to note that the silver connecting pieces have a slightly plastic-like quality, whereas considering the price, they should be of metal.

Sennheiser HDB 630 Headphones: How was the experience?

Well, comfort is well handled in the Sennheiser HDB 630. Its earcups are deep and well-padded, covering the ears completely without pressing them. The headband distributes the weight evenly. The clamping force achieves that rare balance – means – tight enough to seal for ANC, but loose enough not to feel pressure on your head after a few hours.

We wore these headphones while travelling and on Holi vacation, for more than half of every day for about a week. We didn't experience any major discomfort and didn't have to adjust them every fifteen minutes, especially for someone like me who has a smaller head than most women. However, we wouldn't recommend using the Sennheiser HDB 630 headphones during a workout.

Sennheiser HDB 630 Headphones: Button controls

• Power Button: The company claimed that if you press and hold the button for 3 seconds, the device will turn on or off. However, when we tried it, it took much longer than 3 seconds.

• Battery status: To check the battery status, you need to press the power button twice. The company says a sound prompt will be heard, and users can also see the remaining charge on the LED indicator, which is quite accurate.

• Play/Pause: To play or pause music, users need to tap once on the touchpad located on the right side of the earcup. During our testing, it remained well responsive.
• Swipe Control: Swipe up on the touchpad (on the right side of the earcup) to increase the volume, and down to decrease it. This control pad was also quite responsive during our testing.
• Skip Tracks: To skip to the next or previous track, users should swipe right or swipe left, respectively, as per the company said. This method did work very well in our testing.

Overall, all the buttons are well responsive. However, users are not allowed to customise the functions of the buttons except for the on/off control setting.

Sennheiser HDB 630 Headphones: Our experience with Sennheiser SmartControl Plus App

The Sennheiser smart app experience was okayish. We tried connecting the app to headphones using multiple smartphones – both iPhone and Android – and found that there were occasional connectivity issues. In detail: On some smartphones, the Sennheiser SmartControl Plus app couldn't connect to the headphones, even though they connected easily via Bluetooth. But once connected, they worked smoothly.

Through this app, users can access several smart features of the HBD 630, such as equalizer, bass boost toggle, crossfeed, connection management, noise control, anti wind, auto answer call, on-head detection, smart pause and firmware update. It also has codec support and a notable feature is the option to locate headphones – allows users to track the last known location of their device.

Sennheiser HDB 630 Headphones: Battery

The battery life of the Sennheiser HDB 630 headphones is very impressive. The company claims that it is capable of delivering sixty hours of battery life on a single charge, and in actual usage, this figure comes surprisingly close to that. I barely charged the device once in the last month, and daily usage went smoothly as I used it while travelling, doing household chores in the morning, and in evening sessions, etc.

We use an 80W SuperVOOC charger, which took about 1 hour and 30 minutes to charge the device from 0 to 100 per cent. Also, quick charging provides up to seven hours of backup after plugging in for ten minutes.

Sennheiser HDB 630 Headphones: Audio experience

Sound-wise, they're excellent – detail, tonal balance, and spatial presentation are very very good in the wireless ANC category. The music and sound clarity are phenomenal. However, if you listen primarily to bass-dominated genres and want a physical impact, these may seem light to you.

We listened to music and watched content on popular apps like YouTube, Spotify and Instagram using the headphones on, and the experience was impressive. However, the volume level is low to medium when listening to music on Spotify, while it is sufficiently high when listening to music with VLC.

What disappointed us was the sound leakage on the HBD 630, which harms privacy even in this price range. This means - if you're listening to music at a high volume, people around you can clearly hear what you're listening to.

The call experience was good, but only in a quiet room, not suitable for outdoors.

Overall, these headphones are meant for people who don’t care much about heavy bass but instead value fine-tuning, clarity, and depth in sound. They are ideal for listeners who want to catch every subtle detail.

Pros

• Excellent sound clarity, detail, and spatial presentation in the wireless ANC category.
• Outstanding battery life with up to 60 hours of playback.
• Very comfortable for long listening sessions with well-padded earcups.
• Responsive touch controls for playback, volume, and track navigation.

Cons

• Noticeable sound leakage at high volume, hampering privacy.
• Low to medium volume levels on some apps like Spotify.
• App connectivity issues with certain smartphones.
• Some parts of the design feel plastic-like despite the premium price.