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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
If you prioritize wireless convenience and better microphone quality for calls, go for the Sennheiser HD 250BT, which also offers longer battery life suitable for extended use. However, if you prefer a wired connection with a detachable cable and better noise isolation, the KZ ZSN Pro might be more suitable, particularly if you're looking at a more budget-friendly option. The KZ ZSN Pro also offers larger earbud size with cable ear hooks, which may affect comfort depending on your preference. Neither option has active noise cancelling, but both have a closed enclosure, providing some passive noise isolation. Keep in mind the Sennheiser has app support allowing customization, which the KZ ZSN Pro lacks. 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 KZ ZSN Pro
- Good for music
Advantages of the Sennheiser HD 250BT
- Good for phone calls
- Very good for gaming
- Very good for TV and video
- Very good for air travel
- Very good for podcasts and audiobooks
Key differences
Music
7.7
6.5
The KZ ZSN Pro is good for music, while the Sennheiser HD 250BT is only fair.
Gaming
6.0
8.8
The Sennheiser HD 250BT is very good for gaming, while the KZ ZSN Pro is only fair.
Phone Calls
3.1
7.2
The Sennheiser HD 250BT is good for phone calls, while the KZ ZSN Pro is poor.
Podcasts and Audiobooks
4.9
8.1
The Sennheiser HD 250BT is very good for podcasts and audiobooks, while the KZ ZSN Pro is poor.
TV and Video
7.4
8.4
The Sennheiser HD 250BT is very good for TV and video, while the KZ ZSN Pro is good.
Noise Reduction
5.3
6.0
The Sennheiser HD 250BT is only fair for noise reduction, while the KZ ZSN Pro is poor.
Battery
N/A
25.0 Hours
The KZ ZSN Pro does not have a battery. The Sennheiser HD 250BT has 25 hours of battery life.
Cost
$21
$113
$0
$50
$100
$150
$200
The KZ ZSN Pro has a price of $21 and the Sennheiser HD 250BT costs $113.
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Key similarities
Build Quality
9.0
9.0
The KZ ZSN Pro and Sennheiser HD 250BT both have excellent build quality.
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How the KZ ZSN Pro and the Sennheiser HD 250BT compare to other earbuds and headphones
Spec Comparison
 |  | |
| KZ ZSN Pro | Sennheiser HD 250BT |
GENERAL | |||
|---|---|---|---|
| Price | |||
$21 | $113 | ||
Brand | |||
Brand | KZ | Sennheiser | |
Release Date | |||
Release Date | March 1, 2019 | May 1, 2021 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wired | Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7.8/10 | 6.6/10 | |
Phone Calls Score | |||
Phone Calls Score | 3.2/10 | 7.2/10 | |
Gaming Score | |||
Gaming Score | 6/10 | 8.9/10 | |
TV and Video Score | |||
TV and Video Score | 7.5/10 | 8.5/10 | |
Exercise Score | |||
Exercise Score | 4.3/10 | 6.2/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | N/A | 25 Hours | |
Wireless charging | |||
Wireless charging | N/A | No | |
Charging time | |||
Charging time | N/A | 3 Hours | |
Bluetooth version | |||
Bluetooth version | N/A | 5 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | No | |
Noise Reduction Score | |||
Noise Reduction Score | 5.3/10 | 6/10 | |
Virtual Surround | |||
Virtual Surround | N/A | No | |
Android App | |||
Android App | N/A | Yes | |
iOS App | |||
iOS App | N/A | Yes | |
Mic Quality | |||
Mic Quality | N/A | 8.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 9/10 | 9/10 | |
Comfort score | |||
Comfort score | 7.6/10 | 7/10 | |
Size | |||
Size | Large | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 7 Grams | 125 Grams | |
Microphone style | |||
Microphone style | N/A | Integrated | |
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."
Sennheiser HD 250BT
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Dig into reviews and images
Headphone Check
Pete Scholßnagel | 2020
"As a lightweight, robust audio provider with a long battery life, the Sennheiser HD 250BT offer a lot for their price: very good Bluetooth codecs, an app connection and an extremely understated design. These headphones may not be among the most comfortable, but they deliver adequate sound – without overdriving or distortion."
Get a great deal on the KZ ZSN Pro or the Sennheiser HD 250BT
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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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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