Which has better noise cancellation?

Both use adaptive ANC. The Momentum 4 is generally rated a step above the JBL for steady low-frequency noise like engines, while the JBL's Smart Ambient is handy for quick conversations. Neither matches the top Bose or Sony models.

The Momentum 4. Its 42mm drivers, aptX Adaptive support and in-app EQ give more detail and let you tune the sound. The JBL is punchy and fun but less refined and has no analog input.

Which lasts longer on a charge?

The JBL, at up to 65 hours versus 60 with ANC on for the Sennheiser. Both are far above most rivals, so either covers a week of commuting. The Sennheiser recharges faster at about 2 hours versus 3.

Is the Momentum 4 worth stepping up to?

Yes if sound quality and a wired fallback matter to you, and if you want a model with a long, well-documented owner record. Stay with the JBL if you want the lightest option and the longest battery.

Can I use either for calls and video meetings?

Both handle calls. The Momentum 4 has four beamforming mics with wind noise suppression, which generally gives clearer voice pickup outdoors. The JBL's two beamforming mics are fine for indoor calls.

Do either resist sweat or rain?

No. Neither carries a water or dust protection rating, so avoid heavy workouts and rain with both.

JBL Live 770NC vs Sennheiser Momentum 4

The Momentum 4 is the better-sounding headphone and the safer pick for most people. Sennheiser's 42mm drivers, aptX Adaptive and the Smart Control EQ give richer, more adjustable audio, and 7,600 ratings at 4.6 show broad owner satisfaction. The JBL Live 770NC wins on battery life, lighter weight and a lower-risk first ANC headphone, but its 18 ratings are too few to judge long-term reliability.

Choose the JBL Live 770NC if you want the longest battery life, a lighter headphone, and spatial sound with adaptive ANC at the entry end of the market.
Choose the Sennheiser Momentum 4 if sound quality, a wired 3.5mm fallback and a proven track record with thousands of owners matter more than maximum battery hours.

Prices

JBL Live 770NC: $85.00 at mercari.com (last seen Nov 9)
Sennheiser Momentum 4: $189.95 at Amazon (checked today)
Difference: the JBL Live 770NC is $104.95 cheaper than the Sennheiser Momentum 4 at the latest prices (Nov 9 and Nov 10)

	JBL Live 770NC	Sennheiser Momentum 4
Battery life	Up to 65 hours with speed charge	Up to 60 hours with ANC on, 2-hour recharge
Sound hardware	40mm drivers, JBL Signature Sound, spatial audio	42mm drivers, aptX Adaptive, app EQ and presets
Wired listening	USB-C charging only, no analog input	USB-C, 3.5mm and 2.5mm jacks
Weight	About 1 lb	About 2 lb listed, though owners call it light and foldable
Microphones	2 beamforming mics for calls	4 beamforming mics with wind noise suppression
Smart features	Auto play/pause, Smart Ambient, two-device connection	Multipoint, adjustable transparency, Siri/Google/Alexa
Owner feedback base	4.9 from 18 ratings	4.6 from 7,600 ratings
Water and dust protection	None rated	None rated

Spec	JBL Live 770NC	Sennheiser Momentum 4
Battery life	65 hr	Up to 60 hours (ANC on)
Headphone style	Over-Ear	Over-Ear
Noise control technology	Adaptive Noise Cancellation	Adaptive Noise Cancellation
Wireless	Y	Y
Brand	JBL	Sennheiser
Works with	Two devices	Apple Home, Google Home, Amazon Alexa
Assembled product weight	1 lb	2 lb
Color	Blue	Blue
Power type	Battery	Battery
Headphone type	Headphones	Headphones
Model name	Live 770NC	Momentum 4
Headphone Cup Type	Over-ear	Over-ear

Spec	JBL Live 770NC	Sennheiser Momentum 4
Body Part Use	Over-ear	Head
Noise Cancellation Type	True Adaptive Noise Cancelling, Active	Active
Max Battery Life	65 hours	60 hours
Recharge Time	3 hours (from empty)	2 Hours
Rechargeable Battery	Yes	Yes
Driver Size	40 mm	42 mm
Frequency Response	20 Hz - 20 kHz	6 Hz to 22 kHz
Headphone Impedance	32 ohms	60 Ohms (Passive)
Sensitivity	100 dB (at 1kHz/1mW)	106 dB

JBL Live 770NC vs Sennheiser Momentum 4

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JBL Live 770NC vs Sennheiser Momentum 4

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