High resolution, neutral sound, extra long battery life, perfect active noise cancellation and, of course, the absence of cables. Get to know the closed HDB 630. With the included USB-C BTD 700 Bluetooth® dongle, you can freely enjoy excellent audiophile sound anywhere.

Features:

Sennheiser's in-house 42mm transducer delivers neutral sound with lifelike mids, impressive detail and a wide soundstage.

Enjoy high definition thanks to aptX™ HD and aptX™ Adaptive support, especially when paired with the included USB-C BTD 700 Bluetooth® dongle.

For the clearest signal, use a USB-C cable for lossless listening, up to 24-bit/96kHz quality.

The parametric equalizer provides advanced tone control, and the crossfeed function provides full control over the sound.

Powerful adaptive noise cancellation blocks out distractions without compromising sound clarity, dynamics or balance.

Listen to music for days instead of hours with the battery life of up to 60 hours.

Up until now, serious music listening required serious equipment. HDB 630 rewrites the rules.

The search for audiophile sound sometimes requires digging deep into the wallet. High-end DACs that cost more than your first car. Balanced cables, large tube amplifiers. Not exactly stuff that you can just take anywhere. From now on, you can not only own high-fidelity sound, but you can also take it with you, along with all the conveniences of state-of-the-art wireless headphones.

Plus, thanks to the included USB-C BTD 700 Bluetooth® dongle, you can finally enjoy high-resolution wireless audio through a wide variety of devices, including most phones, tablets and laptops. No matter which codec your device supports, HDB 630 and the dongle allow you to enjoy the incredible aptX™ Adaptive, as this innovation allows your smartphone to transmit true high-definition quality to your headphones.

Every component has been carefully designed to work in harmony with each other, revealing details you've never heard from wireless headphones before.

The neutral yet detailed midrange makes it feel like the singers are performing right in front of you. The wide soundstage enhances the feeling that you are right there among the musicians.

Such carefully tuned, neutral, high-resolution sound requires acoustics, mechanics, materials and electronics that complement each other perfectly. Our engineering team has optimized every part of the acoustic chain, from the 42mm in-house transducer to the transparent baffle mesh, to work together with unparalleled balance and clarity.

The deep rear volume and the new acoustic mesh, for example, provide fine upper mids and lower treble. The result is a natural and balanced sound experience, which is almost unprecedented in closed headphones. But the HDB 630 achieves this with a closed back panel. In combination with outstanding adaptive noise cancellation, you can enjoy high sound fidelity anywhere, without distractions.

Critical listening requires state-of-the-art electronics and precise control. That's why we've built in high-resolution codecs and advanced features like crossfeed and parametric equalizer.

The built-in electronics of the HDB 630 keep the music pristinely clean from the source to the ear. aptX™ HD and aptX™ Adaptive Bluetooth® codecs produce high-quality content, all wirelessly. If you want the clearest possible signal, you can also connect via USB-C to listen to high-resolution, lossless files. And that's not even talking about the included audio cable, which allows you to connect to any 3.5mm jack socket for maximum compatibility. Closed-architecture, high-performance adaptive noise cancellation quiets the world without affecting your music, while sound transmission mode allows you to hear your surroundings when needed. The crossfeed function is especially useful for classical tracks, where the mix pulls particularly strongly towards the right or left channel. It balances instruments specifically focused on one channel, resulting in a much more natural listening experience – as if you were hearing the track through a full stereo system.

The previous EQs had only limited benefits, while the new parametric equalizer provides full flexibility, so you can tailor the sound exactly to your needs. The parametric equalizer available through the Smart Control Plus application allows you to shape the sound exactly the way you like it, down to the smallest details.

A traditional graphic equalizer allows for preset frequency bands