Sennheiser HDB 630 Closed-Back Wireless Headphones

SKU 4315

by Sennheiser

$499.95 - $499.95

$499.95

$499.95 - $499.95

$499.95

The Sennheiser HDB 630 is Sennheiser's dedicated audiophile wireless headphone, built around a neutral, reference-grade tuning inspired by the HD 560 series. Where the Momentum line is tuned for consumer listening enjoyment, the HDB 630 is engineered for accuracy, detail retrieval, and a wide natural soundstage in a closed-back design suited to daily use and travel.

At the center is Sennheiser's in-house 42mm dynamic transducer, manufactured at their Tullamore production facility in Ireland. The included BTD 700 USB-C dongle instantly upgrades approximately 80% of smartphones to aptX Adaptive hi-res wireless streaming. For maximum purity, the USB-C port supports direct wired listening at up to 24-bit/96kHz. Note: Hi-res mode is not enabled by default and must be activated in the Smart Control Plus app. A 3.5mm analog input is also available.

The Smart Control Plus app delivers a five-band parametric EQ with adjustable frequency, bandwidth (Q), and filter types for surgical sound shaping. Crossfeed recreates a natural speaker-like stereo image for hard-panned recordings. Triple-tapping the BTD 700 activates a low-latency mode (~30ms) suited to gaming and video use. EQ presets can be shared between users within the app.

All in-stock orders placed before 5pm EST Monday through Friday ship the same day. Free ground shipping on all orders over $9.99 within the 48 contiguous United States.

Features
Specs

Audiophile Tuning - Neutral, reference-grade sound inspired by the HD 560 series with lifelike mids, precise detail, and a wide natural soundstage
42mm In-House Transducer - Manufactured at Sennheiser's Tullamore, Ireland production facility with transparent acoustic mesh and optimized back-volume architecture
BTD 700 Dongle Included - Enables aptX HD and aptX Adaptive hi-res wireless streaming; must be paired before first use; upgrades ~80% of USB-C smartphones to hi-res capability
High-Resolution Wired Listening - USB-C input supports up to 24-bit/96kHz lossless playback; hi-res must be activated in the Smart Control Plus app
3.5mm Analog Input - Fully functional as a passive wired headphone
Parametric EQ - Five-band PEQ with ±6dB range, adjustable frequency, bandwidth (Q), and filter type via Smart Control Plus app
Crossfeed - Recreates speaker-like stereo imaging for natural, fatigue-free listening on hard-panned recordings
EQ Preset Sharing - Share and receive custom presets with other HDB 630 users via the app
Low-Latency Mode - Triple-tap the BTD 700 dongle to activate ~30ms latency for gaming and video
Adaptive ANC - Automatically adjusts noise cancellation to the listening environment
Transparency Mode - Restores ambient awareness at a touch
60-Hour Battery Life - Class-leading runtime for daily and travel use
Quick Charge - 10 minutes of charging provides 7 hours of playback
Foldable, Travel-Ready Design - Full cup swivel, Japanese leatherette headband, carry case included

Brand: Sennheiser
Model: HDB 630
Driver: 42mm dynamic, in-house (Tullamore, Ireland)
Bluetooth: 5.2
Codecs: SBC, AAC, aptX, aptX HD, aptX Adaptive
Wired input: USB-C (up to 24-bit/96kHz), 3.5mm analog
Battery life: 60 hours
Quick charge: 10 minutes = 7 hours playback
ANC: Adaptive
App: Smart Control Plus
Design: Closed-back, over-ear, foldable
Color: Black
Includes: BTD 700 USB-C dongle, carry case, USB-C cable, 3.5mm cable

Quantity

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Returns & Exchanges

Qualifying products may be returned within 30 days from receipt for a full refund. Please note that hearing aid accessories, hygine items and ear care products cannot be returned. Please CLICK HERE to review our full returns policy.

Frequently Asked Questions

What is the BTD 700 dongle and do I need it?

The BTD 700 is a USB-C Bluetooth transmitter dongle included in the box that enables aptX HD and aptX Adaptive hi-res wireless streaming. It must be paired with the headphones before first use. The HDB 630 can pair via standard Bluetooth without it, but the BTD 700 is required to access the highest wireless audio quality and the low-latency gaming mode.

How do I enable hi-res 24-bit/96kHz mode?

Hi-res mode is not active by default. Once the BTD 700 dongle is connected and paired, open the Sennheiser Smart Control Plus app and activate hi-res playback in the settings. This is disabled by default to maximize battery runtime.

How does the HDB 630 differ from the Sennheiser Momentum 4 Wireless?

The Momentum 4 Wireless uses a consumer-tuned sound signature with enhanced bass and Bluetooth 5.4 with aptX Lossless. The HDB 630 uses a neutral, reference-grade tuning inspired by the HD 560 series and adds parametric EQ and Crossfeed for audiophile-level customization. Both share the same physical chassis. The BTD 700 dongle brings the HDB 630's wireless performance to equivalent hi-res levels without native aptX Lossless.

Can the HDB 630 be used wired?

Yes. The USB-C port supports lossless digital audio up to 24-bit/96kHz and the 3.5mm analog input provides a passive wired connection. Both cables are included.

What is the low-latency mode and how does it work?

Triple-tapping the BTD 700 dongle activates approximately 30ms latency mode for gaming and video use. This requires the BTD 700. Note that using the headphone microphone during Bluetooth connection switches the device to Hands Free mode, which significantly reduces audio bandwidth and affects sound quality.