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What we think
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Updated April 11, 2024·
If you prefer a more portable and sweatproof option suitable for exercise with dynamic sound and innovative case features, the JBL Live Flex 3 might be the choice for you, although they are not recommended for calls, meetings, TV, video, or gaming. On the other hand, if superior sound quality for music, TV, and gaming, better comfort, excellent build quality, and active noise cancelling are priorities, then the Sennheiser Momentum 4 headphones are worth considering, even though they come at a higher price and are not optimized for high-intensity activities or exercise. Give Feedback
this description is based on the product variant with some specs and product variant with some specs. At the time of writing, the variant with some specs cost some dollars and the variant with some specs cost some dollars.
Advantages of the JBL Live Flex 3
- Very good for music
- Very good for exercise
Advantages of the Sennheiser Momentum 4
- Excellent for gaming
- Very good for TV and video
- Very good for air travel
- Very good for podcasts and audiobooks
Key differences
Music
8.0
7.5
The JBL Live Flex 3 is very good for music, while the Sennheiser Momentum 4 is good.
Gaming
5.5
9.0
The Sennheiser Momentum 4 is excellent for gaming, while the JBL Live Flex 3 is poor.
Phone Calls
5.2
6.8
The Sennheiser Momentum 4 is only fair for phone calls, while the JBL Live Flex 3 is poor.
Podcasts and Audiobooks
5.9
8.2
The Sennheiser Momentum 4 is very good for podcasts and audiobooks, while the JBL Live Flex 3 is poor.
TV and Video
5.7
8.9
The Sennheiser Momentum 4 is very good for TV and video, while the JBL Live Flex 3 is poor.
Noise Reduction
8.3
9.1
The Sennheiser Momentum 4 is excellent for noise reduction, while the JBL Live Flex 3 is very good.
Battery
10.0 Hours
59.0 Hours
The JBL Live Flex 3 has 10 hours of battery life. The Sennheiser Momentum 4 has 59 hours of battery life.
Cost
$216
$250
$100
$150
$200
$250
$300
$350
The JBL Live Flex 3 has a price of $216 and the Sennheiser Momentum 4 costs $250.
Build Quality
8.5
9.0
The Sennheiser Momentum 4 has excellent build quality, while the JBL Live Flex 3 has very good build quality.
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How the JBL Live Flex 3 and the Sennheiser Momentum 4 compare to other earbuds and headphones
Spec Comparison
 |  | |
| JBL Live Flex 3 | Sennheiser Momentum 4 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$216 | $250 | ||
Brand | |||
Brand | JBL | Sennheiser | |
Release Date | |||
Release Date | June 1, 2024 | August 1, 2022 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wireless | Wired + Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.1/10 | 7.5/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.3/10 | 6.9/10 | |
Gaming Score | |||
Gaming Score | 5.5/10 | 9.1/10 | |
TV and Video Score | |||
TV and Video Score | 5.8/10 | 9/10 | |
Exercise Score | |||
Exercise Score | 8.4/10 | 6.4/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 10 Hours | 59 Hours | |
Wireless charging | |||
Wireless charging | Yes | No | |
Charging time | |||
Charging time | 2 Hours | 2 Hours | |
Bluetooth version | |||
Bluetooth version | 5.3 | 5.2 | |
Case Battery Life | |||
Case Battery Life | 40 | N/A | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | Yes | Yes | |
Noise Reduction Score | |||
Noise Reduction Score | 8.4/10 | 9.1/10 | |
Virtual Surround | |||
Virtual Surround | Yes | No | |
Android App | |||
Android App | Yes | Yes | |
iOS App | |||
iOS App | Yes | Yes | |
Mic Quality | |||
Mic Quality | 7/10 | 8/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.5/10 | 9/10 | |
Comfort score | |||
Comfort score | 7/10 | 8.4/10 | |
Size | |||
Size | Large | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 8.8 Grams | 294.8 Grams | |
Microphone style | |||
Microphone style | Integrated | Integrated | |
Shopping
Sennheiser Momentum 4
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Dig into reviews and images
Sound Guys
Christian Thomas | January 2023
"If you're looking for a slightly more affordable set of ANC headphones in comparison to the Bose or Sony offerings: the Sennheiser MOMENTUM 4 Wireless is not a bad way to go. While its ANC is technically behind the other top-tier headphones, its sound quality is ahead of the pack—as is its battery life. Not bad for $350 USD."
Get a great deal on the JBL Live Flex 3 or the Sennheiser Momentum 4
About JBL
JBL is an American audio equipment manufacturer. Owned by Harman International which is, itself, owned by Samsung Electronics. JBL markets a wide array of monitoring speakers, professional headphones and consumer market headphones and earbuds. It was founded in 1946 by James Bullough Lansing (whose initials give the company its name) and has become one of the most prolific audio companies ever. Their products were responsible for audio during the 1969 Woodstock Festival.
About Sennheiser
A family-owned company, Sennheiser is a German, high fidelity, audio equipment manufacturer founded in 1945. Their consumer audio division is now owned by the Swiss hearing aid and cochlear implant manufacturer Sonova. Sennheiser offers a wide variety of, very high quality, audio equipment solutions, from headphones to earbuds, full sets of monitoring speakers, amplifiers and microphones. They also make what is widely regarded as the best, and most expensive, headphones in existence, the HE-1 Orpheus, costing a whopping $59,000 dollars.
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Why trust us
This information was produced and vetted by the PerfectRec earbuds & headphones team. We are a product research and recommendation organization that meticulously reviews and evaluates the latest earbuds or headphones information and makes it digestible for you.
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Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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