Built for Fidelity, Adapted for Real Life

The Sennheiser HDB 630 is a high-end wireless over-ear headset positioned as the brand’s new reference line above the Momentum 4, aimed at buyers who want top-tier audio fidelity without sacrificing adaptive ANC, multipoint convenience, or long-haul comfort.

Using large 42 mm dynamic drivers tuned for a neutral, reference-leaning profile, the HDB 630 is built for listeners who want clarity and realism with minimal coloration. That acoustic focus is paired with adaptive ANC and a transparency mode so the headphones can hold their own in travel, offices, or mixed-noise environments without forcing the listener to fully commit to isolation at all times.

Long Battery and Hi-Res USB-C

Battery life is rated up to 60 hours and a quick 10-minute top-up can return several hours of listening, making them viable for long trips or multi-day work cycles without dependency on chargers. For critical or latency-sensitive use, they support wired listening both through a classic 3.5 mm analog connection and via USB-C for hi-res digital playback up to 24-bit/96 kHz, giving them a dual identity as both travel headphones and a controlled-path reference device.

Wireless Predictability Plus Real EQ

The included BTD 700 dongle enables aptX Adaptive/HD wireless performance even on devices that lack native codec support, making the wireless chain more predictable and higher-fidelity than standard Bluetooth alone. Once connected, the Smart Control app adds a parametric EQ, A/B preset switching, and QR preset sharing, which shifts these from a “take-it-as-is” audiophile product to something tuneable and repeatable across devices.

A Serious Step Beyond Consumer Tier

Crossfeed is included to emulate a speaker-like stereo image for people who find hard-panned headphone mixes fatiguing. Bluetooth 5.2 with multipoint and aptX Adaptive keeps them competitive on the wireless front, while the fold-flat build and plush materials make long sessions practical. Positioned above Momentum 4, the HDB 630 is intended as Sennheiser’s “wireless HD” reference tier rather than a lifestyle flagship.

Taken together, the HDB 630 is less about being the most feature-stuffed travel headset and more about collapsing two lanes into one: a genuinely reference-leaning closed-back that happens to behave like a top-tier convenience headphone when you leave the studio context. It is pitched to people who will actually notice the difference.