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JBL Live 770NC vs Sennheiser MOMENTUM 4 Wireless

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

Better figure, where one is clearly better

JBLLive 770NCSennheiserMOMENTUM 4 Wireless
Overview
ReleasedAugust 2023August 2022
Sound
TypeOver-earOver-ear
Noise cancellingYesYes
Transparency modeYesYes
Spatial audio with head tracking–No
Driver size40 mm42 mm
BackClosed–
Impedance32 ohms–
Bluetooth codecsSBC and AACSBC, AAC and aptX Adaptive
Lossless over USB-C–Yes
Drivers40 mm dynamic; current UK page lists 20 Hz–20 kHz response; PDF distinguishes Bluetooth 20 Hz–20 kHz from AUX 20 Hz–40 kHz; 100 dB SPL sensitivity at 1 kHzDynamic 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 detailTrue Adaptive Noise Cancelling, Ambient Aware and TalkThruAdaptive 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 featuresSpatial Sound and Personi-Fi 2.0; SBC/AAC confirmed by Les Numériques, while maker LE Audio support remains a promised OTA update; no current LC3 support inferredBuilt-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
Hearing healthPersonalised hearing profile and VoiceAware own-voice monitoring–
Battery
Listening time (maker's claim)Up to 50 hoursUp to 60 hours
Battery life detailUp to 65 hours with Bluetooth on and ANC off, 50 with both on, or 40 with Bluetooth off and ANC on; calls up to 33 hours without ANC or 28 with it; 850 mAh, 3.7 V battery. Current UK table and PDF give three-hour full charging, despite two hours in marketing proseBuilt-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 chargingFive minutes supplies up to four hours10 minutes for up to 6 hours
Design
Weight256 g293 g
Bluetooth5.35.2
Two devices at onceYesYes
Headphone cableYesYes
ControlsPhysical buttons and customisable touch panel; maker automatic play/pause worked in Les Numériques' firmware 3.2.0 test, while Tom's Guide reports wearing detection failedTouch 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
MicrophonesTwo beamforming call microphones; maker separately describes four noise-sensing microphonesFour MEMS speech microphones in a 2x2 beamforming array; automatic wind noise suppression; Sidetone for calls
Fit and ear tipsFoldable over-ear design with fabric headband; closed back confirmed by Les NumériquesAround-the-ear (circumaural), closed-back; folds flat into the carry case
DimensionsOuter cups 9.3 × 7.6 cm; inner 5.8 × 4 cm; depth 2.7 cm–
Works withTwo Bluetooth devices, Google Fast Pair, voice assistants and detachable analogue cable; passive listening confirmed by Les NumériquesSennheiser 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, White, Blue and SandstoneBlack, White, Graphite, Brown, Teal
In the boxHeadphones, USB-C charging cable, detachable audio cable, warranty and quick-start guide. UK page and maker prose advertise a carrying pouch, but PDF box list and Les Numériques' sample omit it. Maker's end-August UK schedule is corroborated by Les Numériques' actual 31 August 2023 regional releaseHeadphones, 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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