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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated April 11, 2024·
If you prioritize wireless convenience, active noise cancelling, and features like ear/head detection and a smart charging case with touch display, the JBL Live Flex 3 would be the better choice, but they come at a premium price. These earbuds also offer better exercise suitability and app customization. On the other hand, if you're seeking a budget-friendly option and don't mind using a wired connection, the KZ ZSN Pro X could satisfy you with its very good build quality and capability for balanced audio with additional cables. However, this model lacks advanced features like wireless connectivity, app support, and noise cancellation. The JBL is optimized for both Android and Apple users, whereas the KZ does not specify optimization for mobile platforms. 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 KZ ZSN Pro X
- Good for TV and video
- Good for air travel
Key differences
Music
8.0
7.0
The JBL Live Flex 3 is very good for music, while the KZ ZSN Pro X is good.
Phone Calls
5.2
3.1
The JBL Live Flex 3 and KZ ZSN Pro X are both poor for phone calls, though the JBL Live Flex 3 is somewhat better.
Podcasts and Audiobooks
5.9
4.7
The JBL Live Flex 3 and KZ ZSN Pro X are both poor for podcasts and audiobooks, though the JBL Live Flex 3 is somewhat better.
TV and Video
5.7
7.3
The KZ ZSN Pro X is good for TV and video, while the JBL Live Flex 3 is poor.
Noise Reduction
8.3
6.0
The JBL Live Flex 3 is very good for noise reduction, while the KZ ZSN Pro X is only fair.
Battery
10.0 Hours
N/A
The JBL Live Flex 3 has 10 hours of battery life. The KZ ZSN Pro X does not have a battery.
Cost
$216
$24
$0
$50
$100
$150
$200
$250
$300
The JBL Live Flex 3 has a price of $216 and the KZ ZSN Pro X costs $24.
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Key similarities
Gaming
5.5
5.9
The KZ ZSN Pro X and JBL Live Flex 3 are both poor for gaming.
Build Quality
8.5
8.5
The JBL Live Flex 3 and KZ ZSN Pro X both have very good build quality.
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How the JBL Live Flex 3 and the KZ ZSN Pro X compare to other earbuds and headphones
Spec Comparison
 |  | |
| JBL Live Flex 3 | KZ ZSN Pro X |
GENERAL | |||
|---|---|---|---|
| Price | |||
$216 | $24 | ||
Brand | |||
Brand | JBL | KZ | |
Release Date | |||
Release Date | June 1, 2024 | June 1, 2020 | |
Form Factor | |||
Form Factor | Earbuds | Earbuds | |
Connectivity | |||
Connectivity | Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.1/10 | 7/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.3/10 | 3.1/10 | |
Gaming Score | |||
Gaming Score | 5.5/10 | 6/10 | |
TV and Video Score | |||
TV and Video Score | 5.8/10 | 7.3/10 | |
Exercise Score | |||
Exercise Score | 8.4/10 | 4.2/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 10 Hours | N/A | |
Wireless charging | |||
Wireless charging | Yes | N/A | |
Charging time | |||
Charging time | 2 Hours | N/A | |
Bluetooth version | |||
Bluetooth version | 5.3 | N/A | |
Case Battery Life | |||
Case Battery Life | 40 | N/A | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | Yes | No | |
Noise Reduction Score | |||
Noise Reduction Score | 8.4/10 | 6/10 | |
Virtual Surround | |||
Virtual Surround | Yes | No | |
Android App | |||
Android App | Yes | N/A | |
iOS App | |||
iOS App | Yes | N/A | |
Mic Quality | |||
Mic Quality | 7/10 | 2.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.5/10 | 8.5/10 | |
Comfort score | |||
Comfort score | 7/10 | 7/10 | |
Size | |||
Size | Large | Large | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 8.8 Grams | 27 Grams | |
Microphone style | |||
Microphone style | Integrated | N/A | |
Shopping
KZ ZSN Pro X
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Dig into reviews and images
Soundguys
Jasper Lastoria | April 2023
"The KZ ZSN PRO X offers superb sound for very little money, like under $30 USD. It has some rough edges with a plastic seam on the cable that can rub on your ear, and the bud is a bit large. The tech isn't cutting edge, but new doesn't always equal better. You should try it."
Get a great deal on the JBL Live Flex 3 or the KZ ZSN Pro X
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.
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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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About the Earbuds or Headphones team
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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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Luis is a Mexico-based headphones expert. He’s been making headphone recommendations for five years and has close to 100 pairs in his personal collection.
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