Sennheiser HDB 630 Wireless Audiophile Headphones with BTD 700 Bluetooth® USB-C Dongle

Experience uncompromising high-resolution audio with the Sennheiser HDB 630 — a closed-back, wireless audiophile headphone built for those who demand studio-grade sound without cables. Featuring Sennheiser’s in-house 42 mm transducer and the included BTD 700 Bluetooth® USB-C Dongle, this headset delivers pristine detail, natural balance, and lifelike mids anywhere you go. With adaptive noise cancellation, a parametric equalizer, and up to 60 hours of battery life, the HDB 630 offers total control, comfort, and clarity for both critical listening and casual enjoyment.

Specifications

• Transducer: 42 mm Sennheiser dynamic driver
• Design: Closed-back, over-ear
• Bluetooth Dongle: BTD 700 Bluetooth® USB-C included
• Audio Codecs: aptX™ HD, aptX™ Adaptive, SBC, AAC
• Frequency Response: Neutral tuning with fast bass, lifelike mids, and balanced treble
• Connectivity: Bluetooth®, USB-C, 3.5 mm analog input
• Sampling Rate: Up to 24-bit/96 kHz via USB-C
• Noise Cancellation: Adaptive Active Noise Cancellation (ANC)
• Equalization: Advanced parametric equalizer and crossfeed via Smart Control Plus App
• Battery Life: Up to 60 hours
• Weight: 311 g (without cable)
• Cables: 1.20 m USB-C to USB-C, 1.20 m 3.5 mm analog cable
• Included Accessories: In-flight adapter, carrying case, BTD 700 dongle, audio cables
• SKU: 700445

Expanded Key Features List

• 42 mm Sennheiser Transducer: Produces studio-grade sound with stunning detail, natural mids, and wide soundstage.
• High-Resolution Wireless Streaming: Enjoy aptX™ HD and aptX™ Adaptive support for crystal-clear, lag-free audio.
• BTD 700 Bluetooth® USB-C Dongle: Ensures audiophile-quality wireless connectivity on laptops and mobile devices.
• Parametric Equalizer & Crossfeed: Customize frequency curves and stereo width for your perfect listening experience.
• Adaptive Noise Cancellation: Blocks ambient distractions while preserving tonal accuracy and clarity.
• 60-Hour Battery Life: Offers extended playtime for uninterrupted listening across days of use.

Q&A Section

Q: What makes the HDB 630 an audiophile-grade wireless headphone?
A: It uses Sennheiser’s proprietary 42 mm transducer and supports high-resolution codecs like aptX™ HD and Adaptive for pure, detailed sound.

Q: What is included with the HDB 630?
A: The package includes the headphones, BTD 700 Bluetooth® USB-C dongle, USB-C and analog cables, an in-flight adapter, and a carrying case.

Q: How long does the battery last?
A: The HDB 630 offers up to 60 hours of continuous playback on a single charge.

Q: Can I adjust the sound profile?
A: Yes, you can fine-tune your audio using the parametric equalizer and crossfeed features via the Smart Control Plus App.

Q: Does it support wired listening?
A: Absolutely. You can connect via USB-C or the included 3.5 mm analog cable for lossless audio playback up to 24-bit/96 kHz.

Q: How effective is the noise cancellation?
A: The adaptive ANC adjusts to your environment, blocking out distractions without compromising sound fidelity.

Q: Is the HDB 630 comfortable for long listening sessions?
A: Yes, its lightweight 311 g frame and padded earcups are designed for extended wear with minimal fatigue.

Q: What devices work best with the BTD 700 dongle?
A: Any device with a USB-C port, including laptops, tablets, and smartphones, can use the dongle for high-quality wireless audio streaming.