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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated April 11, 2024·
If you prioritize wireless convenience and active noise cancelling for a quieter listening experience, the JBL Live Flex 3 would be a better choice; they also offer advanced features such as app equalizer, touch display on their charging case, and are optimized for both Android and Apple devices. However, if budget is a concern and you prefer a wired connection with robust build quality and are okay without noise cancellation, then the KZ ZSN Pro may suit you. The JBLs are better for exercise and portability, but KZ's may be preferable for a more balanced audio with the additional purchase of specialized cables. 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
- Good for TV and video
Key differences
Phone Calls
5.2
3.1
The JBL Live Flex 3 and KZ ZSN Pro are both poor for phone calls, though the JBL Live Flex 3 is somewhat better.
Podcasts and Audiobooks
5.9
4.9
The JBL Live Flex 3 and KZ ZSN Pro are both poor for podcasts and audiobooks, though the JBL Live Flex 3 is somewhat better.
TV and Video
5.7
7.4
The KZ ZSN Pro is good for TV and video, while the JBL Live Flex 3 is poor.
Noise Reduction
8.3
5.3
The JBL Live Flex 3 is very good for noise reduction, while the KZ ZSN Pro is poor.
Battery
10.0 Hours
N/A
The JBL Live Flex 3 has 10 hours of battery life. The KZ ZSN Pro does not have a battery.
Cost
$216
$25
$0
$50
$100
$150
$200
$250
$300
The JBL Live Flex 3 has a price of $216 and the KZ ZSN Pro costs $25.
Build Quality
8.5
9.0
The KZ ZSN Pro has excellent build quality, while the JBL Live Flex 3 has very good build quality.
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Key similarities
Music
8.0
7.7
Although they have very similar scores, PerfectRec considers JBL Live Flex 3 to be very good for music, while the KZ ZSN Pro is good.
Gaming
5.5
6.0
Although they have very similar scores, PerfectRec considers KZ ZSN Pro to be only fair for gaming, while the JBL Live Flex 3 is poor.
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How the JBL Live Flex 3 and the KZ ZSN Pro compare to other earbuds and headphones
Spec Comparison
 |  | |
| JBL Live Flex 3 | KZ ZSN Pro |
GENERAL | |||
|---|---|---|---|
| Price | |||
$216 | $25 | ||
Brand | |||
Brand | JBL | KZ | |
Release Date | |||
Release Date | June 1, 2024 | March 1, 2019 | |
Form Factor | |||
Form Factor | Earbuds | Earbuds | |
Connectivity | |||
Connectivity | Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.1/10 | 7.8/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.3/10 | 3.2/10 | |
Gaming Score | |||
Gaming Score | 5.5/10 | 6/10 | |
TV and Video Score | |||
TV and Video Score | 5.8/10 | 7.5/10 | |
Exercise Score | |||
Exercise Score | 8.4/10 | 4.3/10 | |
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 | 5.3/10 | |
Virtual Surround | |||
Virtual Surround | Yes | N/A | |
Android App | |||
Android App | Yes | N/A | |
iOS App | |||
iOS App | Yes | N/A | |
Mic Quality | |||
Mic Quality | 7/10 | N/A | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.5/10 | 9/10 | |
Comfort score | |||
Comfort score | 7/10 | 7.6/10 | |
Size | |||
Size | Large | Large | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 8.8 Grams | 7 Grams | |
Microphone style | |||
Microphone style | Integrated | N/A | |
Shopping
KZ ZSN Pro
See more
Dig into reviews and images
PrimeAudio
David Becker | 2019
"Undoubtedly the focus and the star of the show, the ZSN Pro’s bass is big, bold and bangin’. The amount of gusto in the low end should satisfy anyone who likes a large lick of bass and even certified bassheads will probably get a kick out of this."
Get a great deal on the JBL Live Flex 3 or the KZ ZSN Pro
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
Joe Golden, Ph.D
CEO and Earbuds and Headphones Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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Chandradeep Chowdhury
Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
Luis Torres
Earbuds and Headphones Expert
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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