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Sennheiser HDB 630 vs Sennheiser MOMENTUM 4 Wireless

Every spec side by side, from each maker's published figures.

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SennheiserHDB 630SennheiserMOMENTUM 4 Wireless
Overview
ReleasedOctober 2025August 2022
Sound
TypeOver-earOver-ear
Noise cancellingYesYes
Transparency modeYesYes
Spatial audio with head tracking–No
Driver size42 mm42 mm
BackClosed–
Impedance480 ohms–
Bluetooth codecsSBC, AAC, aptX and aptX AdaptiveSBC, AAC and aptX Adaptive
Lossless over USB-CYesYes
DriversDynamic transducer; 6 Hz to 40 kHz via line-in, 96 kHz USB or 96 kHz aptX Adaptive, 6 Hz to 22 kHz otherwise; active impedance 480 Ω; 105 dB SPL at 1 kHz/0 dBFS; THD below 0.2% at 1 kHz/100 dB SPLDynamic transducer; 6 Hz to 22,000 Hz (–10 dB); 106 dB SPL (1 kHz / 0 dBFS); THD < 0.3% (1 kHz, 100 dB SPL)
Noise cancelling detailAdaptive noise cancellation and adjustable Transparency ModeAdaptive Noise Cancellation with two outward and two inward microphones; Transparency Mode; ANC and Transparency intensity adjustable by pinch gestures or in the app; wind noise reduction off, auto or max
Audio featuresSmart Control Plus parametric EQ and crossfeed; USB audio up to 24-bit/96 kHz; Bluetooth codecs include aptX HD as well as aptX Adaptive, aptX, AAC and SBC; the headphones do not support aptX Lossless even though the included BTD 700 supports it with other compatible headphonesBuilt-in EQ, sound modes and Sound Personalization in the Smart Control app; audio from a Mac, PC or mobile device over the USB-C cable
Battery
Listening time (maker's claim)Up to 60 hoursUp to 60 hours
Battery life detailBluetooth playback with ANC activated; 700 mAh, 3.7 V, 2.59 Wh lithium-polymer battery (manual); analogue listening requires power (What Hi-Fi?); USB audio also charges the headphonesBuilt-in 700 mAh lithium-polymer battery; 60 hours measured with music over Bluetooth and ANC on; full charge in about 2 hours (USB-C, 5 V, 750 mA max)
Fast charging10 minutes gives up to 7 hours of listening; full charge approximately 2 hours (manual)10 minutes for up to 6 hours
Design
Weight311 g293 g
Bluetooth5.25.2
Two devices at onceYesYes
Headphone cableYesYes
ControlsRight-earcup touch pad for playback, volume, calls and ANC/transparency, multifunction button for power/pairing and the phone's voice assistant; Smart Pause wearing detectionTouch pad on the right ear cup (tap, swipe, pinch); multi-function button; Smart Pause pauses playback when the headphones are taken off; Auto On/Off
MicrophonesFour omnidirectional MEMS microphones in two beamforming pairs; 50 Hz to 10 kHz microphone response (manual)Four MEMS speech microphones in a 2x2 beamforming array; automatic wind noise suppression; Sidetone for calls
Fit and ear tipsSynthetic leatherette earpads and Japanese IDEATEX Protein Leatherette headband; swivelling earcups and replaceable pads; 311 g without cable on the UK specification page, versus 293 g in the manualAround-the-ear (circumaural), closed-back; folds flat into the carry case
Water resistance detailNo water resistance rating published–
Works withSennheiser Smart Control Plus; connects to two Bluetooth devices, plays audio from one at a time; included BTD 700 is Bluetooth 5.4, while the headphones are Bluetooth 5.2; aptX Adaptive via the dongle requires High Resolution mode in the appSennheiser Smart Control app; two active Bluetooth connections; USB audio with a Mac, PC or mobile device; 2.5 mm analogue input (switches off Bluetooth)
ColoursBlack; Lunar Silver added in September 2026 (Sennheiser US announcement)Black, White, Graphite, Brown, Teal
In the boxHeadphones, BTD 700 USB-C dongle, 1.2 m USB-C to USB-C charging/audio cable, 1.2 m analogue cable with 3.5 mm source plug, in-flight adapter and carrying caseHeadphones, carry case, USB-C to USB-A cable (approx. 1.2 m), 3.5 mm to 2.5 mm audio cable (approx. 1.2 m), in-flight adapter, quick guide, safety guide

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