When you think of Sennheiser, you think of heritage built over decades of engineering headphones that audiophiles trust. With the HDB 630, Sennheiser is aiming to bring together two worlds: serious sound quality and the ease of wireless listening. This is not just another ANC headphone for commuters. It is a proper piece of gear made for listeners who care about detail, tone, and flexibility.
So what makes the HDB 630 stand out? Here is the breakdown.
Design and Build
The HDB 630 takes a clean, professional approach with matte black shells, subtle silver yokes, and a build that feels solid without being heavy. At 311 grams, it is not the lightest pair out there, but the weight distribution and gentle clamping force make it comfortable for long listening sessions. The earcups swivel for easier packing, and the earpads are soft and plush for extended wear.
The headband is wrapped in refined Japanese leatherette, adding a touch of luxury without being flashy. It is the kind of design that feels premium without calling for attention.
Specs at a Glance
Drivers: 42mm in-house dynamic transducers
Frequency Response: 6Hz to 40kHz (wired)
Nominal Impedance: Active 480 Ohm
Connectivity: Bluetooth 5.2, USB-C, 3.5mm analog
Codecs: SBC, AAC, aptX Adaptive, aptX HD, aptX
Battery Life: Up to 60 hours with ANC
Charging: USB-C
Weight: 311g
Extras: Hi-Res AptX Adaptive BTD 700 Bluetooth USB-C dongle, hard case, parametric EQ via Smart Control Plus app
These specs point to a headphone designed for flexibility. You get wireless listening with high-resolution codecs when available, and wired performance up to 24-bit and 96 kHz for lossless sessions.
Sound Signature
The HDB 630 offers a neutral tuning that audiophiles will appreciate. Bass is fast and controlled, mids are lifelike, and treble adds air without harshness. Vocals feel present and natural, and the wide soundstage creates an immersive experience that feels closer to a live performance.
The standout feature is the parametric equaliser in the Smart Control Plus app. Unlike basic EQ sliders, this lets you define exact frequency ranges, adjust bandwidth, and fine-tune your sound with precision. Want extra warmth for acoustic tracks? Done. Need to reduce brightness in a certain range? Easy. Paired with the crossfeed feature, which balances hard panned mixes for a more natural stereo feel, the HDB 630 gives you an uncommon level of control for wireless headphones.
Noise Cancelling and Transparency
The HDB 630 uses adaptive noise cancellation that blocks distractions without harming clarity or dynamics. Transparency mode is equally well done, letting you hear your surroundings naturally when needed. It is a thoughtful approach that protects sound quality while keeping you aware when you choose.
Battery Life
With up to 60 hours of battery life, the HDB 630 is built for long stretches of use. Whether you are on a week-long trip or pushing through long work sessions, you can listen for days without worrying about charging. If you are caught short, a 10-minute fast charge gives you about seven hours of playback, which is perfect for last-minute top-ups.
Connectivity and the Clever Dongle
One of the smartest inclusions is the BTD 700 Bluetooth USB-C dongle. Bluetooth audio quality depends heavily on the codec supported by your device, and many phones default to AAC, which is fine for casual use but not ideal for high-resolution playback. Plug in the dongle, and you unlock aptX Adaptive and aptX HD, which take your wireless audio a level higher.
For purists, wired listening via USB-C delivers 24-bit and 96 kHz resolution. There is also a 3.5mm analog option for maximum compatibility.
Who Is It For and Who Should Skip It
The HDB 630 is ideal for:
Audiophiles on the move who want high-resolution sound without bulky gear
Hybrid listeners who switch between wireless convenience and wired critical listening
Control enthusiasts who enjoy deep EQ options and advanced features
Who might want to look elsewhere:
Budget-conscious shoppers
Minimalist users who want pure plug-and-play simplicity
Anyone who prioritises industry-leading noise cancellation above all else
Start Listening Now!
The Sennheiser HDB 630 is not focused on chasing trends. It is focused on delivering excellent sound with modern convenience. It respects the audiophile mindset while offering wireless freedom, advanced control, and comfort built for long sessions. If you want a headphone that blends serious performance with everyday practicality, this could be the one.
