Sennheiser HDB 630 – Audiophile Portable Headphones

Born from Sennheiser's quest for uncompromised fidelity, the HDB 630 brings high-resolution sound to life wherever you go. Sporting an advanced acoustic system, both wired and wireless paths, and a highly customisable interface, it is built for listeners who demand studio-grade performance on the move.

Key Features

• 42 mm dynamic drivers: Precisely tuned for balanced, natural tonality with clean midrange and controlled bass
• High-res support (24-bit/96 kHz): Via USB-C or analog cable for lossless listening
• Bluetooth 5.2 with aptX Adaptive + bundled dongle: Wireless high-res capability even for devices without native support
• Adaptive Noise Cancellation & Transparency Mode: Quiet your surroundings when needed or stay aware of the environment
• Smart Control Plus app with Parametric EQ & Crossfeed: Fine-tune your sound with deep control, share presets, and shape your listening experience
• Up to 60 h battery life + fast charge: 7 h of playback from a 10-min charge (ANC on)

Customer Benefits

Whether commuting, working, or relaxing, the HDB 630 gives you full control over your sound without compromise. Its high performance in both wired and wireless modes ensures you won't lose signal quality as you switch devices. Deep customization makes it easy to tailor the sound to your taste or to the genre you're listening to, while ANC and transparency features let you adapt to any environment.

Quick Specs

• Weight: 311 g (without cable)
• Connectivity: USB-C (digital) and 3.5 mm analog (detachable 1.20 m cable)
• Bluetooth codecs: SBC, AAC, aptX, aptX HD, aptX Adaptive
• Battery Life: Up to 60 h (ANC + Bluetooth)
• Quick Charge: 10 min → ~7 h playback
• Drivers: 42 mm dynamic, closed-back design

In the Box

• Sennheiser HDB 630 headphones
• BTD 700 Bluetooth USB-C dongle
• 1.20 m USB C-C audio and charging cable
• 1.20 m audio cable with 3.5 mm plug
• In-flight adapter
• Carrying case
• Documentation & safety info

Use Cases / Ideal For

Ideal for audiophiles, travelers, mobile music professionals, and anyone who refuses to compromise on audio quality. Great for long flights, studio work on the go, and listening sessions in noisy environments.

Compatibility

Works with modern smartphones, tablets, laptops and DACs. The included Bluetooth dongle enables high-res streaming even on devices without aptX Adaptive support. The Smart Control Plus app (iOS/Android) handles firmware, EQ tuning, codec settings, noise cancellation, and more.

Pros & Cons

✅ Pros:

• High resolution in both wired and wireless modes
• Deep sound customization via parametric EQ and crossfeed
• Impressive battery life with quick charge
• Strong ANC and transparency control
• Comfortable, practical design for long sessions

⚠️ Cons:

• Relatively heavy (~311 g) for portable use
• Full potential in wireless mode depends on dongle/codec support
• No gadget-level lossless codecs like LDAC supported

With the HDB 630, Sennheiser bridges the gap between studio performance and everyday usability.