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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated April 11, 2024·
Choosing between JBL Live Flex 3 and the Koss Porta Pro depends on your preferences and needs. If you're looking for modern wireless earbuds with a touch display for controls, active noise cancelling, sweat and dust proof features, and optimized audio for both Android and Apple devices, the JBL Live Flex 3 would suit you. However, these earbuds have a poor performance for calls, gaming, TV, and video. On the other hand, the Koss Porta Pro are classic on-ear headphones with a wired connection, offering very good music quality but are not built for exercise, don't have noise cancellation, and lack modern features such as app controls and wireless connectivity. The Porta Pro are significantly more affordable, making them a good choice if you're on a budget and prefer simplicity. 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 exercise
Advantages of the Koss Porta Pro
- Good for TV and video
Key differences
Gaming
5.5
6.4
The Koss Porta Pro is only fair for gaming, while the JBL Live Flex 3 is poor.
Phone Calls
5.2
4.3
The JBL Live Flex 3 and Koss Porta Pro are both poor for phone calls, though the JBL Live Flex 3 is somewhat better.
Podcasts and Audiobooks
5.9
6.8
The Koss Porta Pro is only fair for podcasts and audiobooks, while the JBL Live Flex 3 is poor.
TV and Video
5.7
7.6
The Koss Porta Pro is good for TV and video, while the JBL Live Flex 3 is poor.
Noise Reduction
8.3
2.5
The JBL Live Flex 3 is very good for noise reduction, while the Koss Porta Pro is poor.
Battery
10.0 Hours
N/A
The JBL Live Flex 3 has 10 hours of battery life. The Koss Porta Pro does not have a battery.
Cost
$216
$49
$0
$50
$100
$150
$200
$250
$300
The JBL Live Flex 3 has a price of $216 and the Koss Porta Pro costs $49.
Build Quality
8.5
6.0
The JBL Live Flex 3 has very good build quality, while the Koss Porta Pro has only fair build quality.
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Key similarities
Music
8.0
8.2
The Koss Porta Pro and JBL Live Flex 3 are both very good for music.
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How the JBL Live Flex 3 and the Koss Porta Pro compare to other earbuds and headphones
Spec Comparison
 |  | |
| JBL Live Flex 3 | Koss Porta Pro |
GENERAL | |||
|---|---|---|---|
| Price | |||
$216 | $49 | ||
Brand | |||
Brand | JBL | Koss | |
Release Date | |||
Release Date | June 1, 2024 | January 1, 1984 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.1/10 | 8.3/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.3/10 | 4.3/10 | |
Gaming Score | |||
Gaming Score | 5.5/10 | 6.4/10 | |
TV and Video Score | |||
TV and Video Score | 5.8/10 | 7.7/10 | |
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 | 2.5/10 | |
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 | 6/10 | |
Comfort score | |||
Comfort score | 7/10 | 7/10 | |
Size | |||
Size | Large | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 8.8 Grams | 63.5 Grams | |
Microphone style | |||
Microphone style | Integrated | N/A | |
Shopping
Koss Porta Pro
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Dig into reviews and images
Headphones.com
Sebastian Taboada | February 2022
"It’s clear to see why these have been such a popular choice amongst listeners for nearly four decades. It’s a charming pair of headphones that delivers a truly enjoyable listening experience and one that I think punches well above its weight."
Get a great deal on the JBL Live Flex 3 or the Koss Porta 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.
About Koss
Koss is an American headphone manufacturer established in 1953. In 1958, they created the first set of stereophones, that is headphones with stereo sound, and in 1984 they released the world-famous Porta Pro, a set of on-ear headphones that has remained essentially unchanged for more than 30 years and that is still made, sold and loved by many audio enthusiasts around the world today.
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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 is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
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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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