Iconic｜ Electronic Accessories ｜Sennheiser HDB 630 Closed-Back Wireless Headphones

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.
 
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Features
 

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

Specs 

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
Brand:SennheiserSKU:4315Tags:Assistive Devices, Bluetooth Headphones & Earphones, Headphones & Earphones