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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 want features like AAC and AptX HD codecs for better sound quality, the Bowers and Wilkins Pi7 S2 is ideal, also providing better noise isolation and suitability for air travel. However, be aware they are priced at a premium. In contrast, the KZ ZSN Pro X offers a wired experience, which can be more reliable for a stable connection, and they're also more affordable. They lack active noise cancelling and the advanced wireless codecs, making them less ideal for noisy environments or high-quality wireless streaming but a good choice for budget-conscious users or those preferring a traditional wired setup. 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 Bowers and Wilkins Pi7 S2
- Very good for air travel
Advantages of the KZ ZSN Pro X
- Good for TV and video
Key differences
Gaming
5.3
5.9
The KZ ZSN Pro X and Bowers and Wilkins Pi7 S2 are both poor for gaming, though the KZ ZSN Pro X is somewhat better.
Phone Calls
5.2
3.1
The Bowers and Wilkins Pi7 S2 and KZ ZSN Pro X are both poor for phone calls, though the Bowers and Wilkins Pi7 S2 is somewhat better.
Podcasts and Audiobooks
5.6
4.7
The Bowers and Wilkins Pi7 S2 and KZ ZSN Pro X are both poor for podcasts and audiobooks, though the Bowers and Wilkins Pi7 S2 is somewhat better.
TV and Video
6.0
7.3
The KZ ZSN Pro X is good for TV and video, while the Bowers and Wilkins Pi7 S2 is only fair.
Noise Reduction
8.3
6.0
The Bowers and Wilkins Pi7 S2 is very good for noise reduction, while the KZ ZSN Pro X is only fair.
Battery
5.0 Hours
N/A
The Bowers and Wilkins Pi7 S2 has 5 hours of battery life. The KZ ZSN Pro X does not have a battery.
Cost
$127
$22
$0
$50
$100
$150
$200
The Bowers and Wilkins Pi7 S2 has a price of $127 and the KZ ZSN Pro X costs $22.
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Key similarities
Music
7.5
7.0
The Bowers and Wilkins Pi7 S2 and KZ ZSN Pro X are both good for music.
Build Quality
8.9
8.5
The Bowers and Wilkins Pi7 S2 and KZ ZSN Pro X both have very good build quality.
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How the Bowers and Wilkins Pi7 S2 and the KZ ZSN Pro X compare to other earbuds and headphones
Spec Comparison
 |  | |
| Bowers and Wilkins Pi7 S2 | KZ ZSN Pro X |
GENERAL | |||
|---|---|---|---|
| Price | |||
$127 | $22 | ||
Brand | |||
Brand | Bowers and Wilkins | KZ | |
Release Date | |||
Release Date | January 1, 2023 | June 1, 2020 | |
Form Factor | |||
Form Factor | Earbuds | Earbuds | |
Connectivity | |||
Connectivity | Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7.5/10 | 7/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.2/10 | 3.1/10 | |
Gaming Score | |||
Gaming Score | 5.4/10 | 6/10 | |
TV and Video Score | |||
TV and Video Score | 6/10 | 7.3/10 | |
Exercise Score | |||
Exercise Score | 6.3/10 | 4.2/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 5 Hours | N/A | |
Wireless charging | |||
Wireless charging | Yes | N/A | |
Charging time | |||
Charging time | 0.75 Hours | N/A | |
Bluetooth version | |||
Bluetooth version | 5 | N/A | |
Case Battery Life | |||
Case Battery Life | 13 | 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 | No | 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 | 8.9/10 | 8.5/10 | |
Comfort score | |||
Comfort score | 8/10 | 7/10 | |
Size | |||
Size | Large | Large | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 7 Grams | 27 Grams | |
Microphone style | |||
Microphone style | Integrated | N/A | |
Shopping
Bowers and Wilkins Pi7 S2
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Dig into reviews and images
Engadget
Billy Steele | March 2023
"While the overall sound quality is great, these earbuds fall short in terms of battery life, customization and ANC performance. Bowers & Wilkins’ ability to consistently deliver pristine sound isn’t enough to make up for what the Pi7 S2 lacks, which is unfortunately quite a bit."
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 Bowers and Wilkins Pi7 S2 or the KZ ZSN Pro X
About Bowers and Wilkins
Bowers and Wilkins is a British audio equipment manufacturer with a focus on innovation and product development. It was founded by a couple of real-life James Bonds, the co-founders John Bowers and Roy Wilkins, who met while working for MI6 during World War II. The company keeps being favored by enthusiasts due to their sound quality, craftsmanship and signature aesthetics.
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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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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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