Sennheiser HDB 630

Audiophile sound. Wireless.

The HDB 630 delivers neutral, high-resolution sound in a closed-back, wireless over-ear design. With in-house 42 mm drivers, adaptive noise cancelling, and the included BTD 700 Bluetooth® USB-C dongle, it brings true audiophile performance anywhere—without compromise.

Highlights

Audiophile control and tuning
The HDB 630 supports aptX™ HD and aptX™ Adaptive for wireless high-res audio. Via USB-C or analog, it can play back lossless signals up to 24-bit / 96 kHz. A parametric EQ and crossfeed function in the Smart Control Plus app let you fine-tune the sound to your personal preference.

Precisely tuned acoustics
Every element—from the 42 mm driver to the deep rear volume and magnet-port damping—has been carefully voiced as a complete system. The result is a balanced, natural presentation with lifelike mids, controlled treble, and clearly defined bass—distinctive among closed-back Bluetooth headphones.

Adaptive noise cancelling & transparency mode
Adaptive noise cancelling effectively reduces ambient noise without compromising dynamics or tonal balance. When needed, transparency mode brings outside sound back in—ideal for situational awareness.

Comfort & endurance
Soft ear pads, a headband with Japanese synthetic leather, and low clamping force ensure long-term comfort. With up to 60 hours of battery life, the HDB 630 keeps playing for days at a time.

In the box

• HDB 630 headphones (closed-back, wireless)
• BTD 700 Bluetooth® USB-C dongle
• 1.2 m USB-C to C cable (audio & charging)
• 1.2 m audio cable (3.5 mm)
• Airplane adapter
• Carry pouch