Sennheiser Launches HDB 630 Headphones

Global audio specialist Sennheiser has announced the launch of its new premium wireless headphones, the Sennheiser HDB 630. Positioned as the brand’s first dedicated high-resolution audiophile wireless product, the HDB 630 aims to bring uncompromised, reference-quality sound to listeners everywhere, blending the acoustic precision of their celebrated HD series with the convenience of their popular Momentum wireless range.

Available for pre-order immediately and set for global shipping on October 21, 2025, the new over-ear, closed-back headphones are priced at $499.95 / £399.90 / €499.90. This premium pricing places them in direct competition with top-tier wireless headphones from brands like Sony and Bowers & Wilkins, but Sennheiser is banking on its unique focus on high-fidelity audio to win over discerning listeners.

Wireless Freedom Meets Audiophile Fidelity

The core feature of the HDB 630 is its revolutionary approach to delivering high-resolution audio over a wireless connection. While the headphones support standard Bluetooth codecs, the main innovation lies in the inclusion of the BTD 700 USB-C Bluetooth transmitter dongle right in the box.

This compact dongle instantly upgrades the wireless streaming capability of almost any device, including smartphones and tablets (even those that don’t natively support high-res Bluetooth codecs like iPhones), to the aptX Adaptive codec. This technology allows for streaming music at up to 24-bit/96kHz quality, providing a significantly more detailed and higher-resolution wireless experience than standard Bluetooth. Sennheiser claims that this included transmitter brings high-res wireless capability to an estimated 80% of smartphone models instantly, by simply utilizing the USB-C port.

For true lossless audio playback, the HDB 630 also supports a wired connection via either a USB-C port or a 3.5mm analog cable (both included). When connected this way, the headphones can handle full 24-bit/96kHz resolution from compatible sources.

Customized Acoustic Engineering

Inheriting the acclaimed ergonomic chassis design of the best-selling Momentum 4 Wireless, the HDB 630 features an entirely new, customized acoustic system. At the heart of this system are new 42mm dynamic drivers, which are manufactured at Sennheiser’s high-tech production facility in Tullamore, Ireland. The acoustic treatments are specifically engineered for “purity, not hype,” promising smooth mids, intimate vocals, and fast, accurate dynamics that stay true to the original studio master. The claimed frequency response is an expansive 6 Hz to 40 kHz when used with a wired USB-C connection.

Advanced Tuning and Features

Beyond the hardware, the HDB 630 is packed with features designed to appeal to the dedicated audio enthusiast:

• Parametric Equalizer (PEQ): Accessed via the companion Smart Control Plus app, a new full Parametric EQ provides granular control over sound shaping. Users can adjust not just the gain of a frequency band but also the specific frequency and the ‘Q-factor’ (bandwidth), allowing for highly precise sonic tailoring. These custom tunings are stored directly on the headphone’s advanced processing system, ensuring they apply across all connected devices and apps.
• Crossfeed Function: Inspired by the company’s ultra-flagship HE 1 system, the new Crossfeed feature digitally blends the left and right audio channels. This subtly mimics the sound of listening to speakers in a room, which can help reduce listening fatigue and provide a more natural, balanced presentation, especially with older recordings that feature extreme channel separation.
• Adaptive Noise Cancellation (ANC): The sealed-design headphones feature a Hybrid Adaptive ANC system to effectively block out environmental distractions while preserving the clarity and dynamics of the music. A Transparency mode is also included for quickly tuning into your surroundings.
• Exceptional Battery Life: Continuing the legacy of the Momentum 4, the HDB 630 boasts an impressive battery life of up to 60 hours with ANC enabled when listening with non-hi-res codecs, or a still-excellent 45 hours with full hi-res streaming and ANC on. A quick-charge function provides approximately seven hours of playback from just a 10-minute charge.

With the HDB 630, Sennheiser is making a clear statement: audiophile-grade sound quality is no longer tethered to a desktop setup. By bundling the necessary wireless transmitter and integrating professional-grade tuning tools, the new headphones are set to redefine the expectations for high-end wireless audio on the go.