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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated April 11, 2024·
If you're on a budget and primarily need earbuds for wired music listening, the KZ ZSN Pro X could be suitable, offering good sound and a detachable cable; however, they have poor mic quality, making them less optimal for calls and may not be the best for gaming due to potential latency issues. In contrast, the Sennheiser HD 350BT headphones are wireless with excellent sound quality, making them great for music, TV, gaming, and calls, plus they support low latency codecs which improve synchronization. They are more expensive, but if you need versatility and wireless convenience, they might be worth the extra cost. However, for exercise or travel, the Sennheiser's might not be as ideal due to their size and poorer noise isolation. 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 X
- The KZ ZSN Pro X has no clear advantages over the Sennheiser HD 350BT.
Advantages of the Sennheiser HD 350BT
- Good for phone calls
- Excellent for gaming
- Excellent for TV and video
- Very good for air travel
- Very good for podcasts and audiobooks
Key differences
Gaming
5.9
9.1
The Sennheiser HD 350BT is excellent for gaming, while the KZ ZSN Pro X is poor.
Phone Calls
3.1
7.4
The Sennheiser HD 350BT is good for phone calls, while the KZ ZSN Pro X is poor.
Podcasts and Audiobooks
4.7
8.3
The Sennheiser HD 350BT is very good for podcasts and audiobooks, while the KZ ZSN Pro X is poor.
TV and Video
7.3
9.0
The Sennheiser HD 350BT is excellent for TV and video, while the KZ ZSN Pro X is good.
Battery
N/A
33.0 Hours
The KZ ZSN Pro X does not have a battery. The Sennheiser HD 350BT has 33 hours of battery life.
Cost
$24
$80
$0
$20
$40
$60
$80
$100
The KZ ZSN Pro X has a price of $24 and the Sennheiser HD 350BT costs $80.
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Key similarities
Music
7.0
7.0
The KZ ZSN Pro X and Sennheiser HD 350BT are both good for music.
Noise Reduction
6.0
6.0
The KZ ZSN Pro X and Sennheiser HD 350BT are both only fair for noise reduction.
Build Quality
8.5
8.2
The KZ ZSN Pro X and Sennheiser HD 350BT both have very good build quality.
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How the KZ ZSN Pro X and the Sennheiser HD 350BT compare to other earbuds and headphones
Spec Comparison
 |  | |
| KZ ZSN Pro X | Sennheiser HD 350BT |
GENERAL | |||
|---|---|---|---|
| Price | |||
$24 | $80 | ||
Brand | |||
Brand | KZ | Sennheiser | |
Release Date | |||
Release Date | June 1, 2020 | January 1, 2020 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wired | Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7/10 | 7/10 | |
Phone Calls Score | |||
Phone Calls Score | 3.1/10 | 7.4/10 | |
Gaming Score | |||
Gaming Score | 6/10 | 9.1/10 | |
TV and Video Score | |||
TV and Video Score | 7.3/10 | 9.1/10 | |
Exercise Score | |||
Exercise Score | 4.2/10 | 6.3/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | N/A | 33 Hours | |
Wireless charging | |||
Wireless charging | N/A | No | |
Charging time | |||
Charging time | N/A | 2 Hours | |
Bluetooth version | |||
Bluetooth version | N/A | 5 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | No | |
Noise Reduction Score | |||
Noise Reduction Score | 6/10 | 6/10 | |
Virtual Surround | |||
Virtual Surround | No | No | |
Android App | |||
Android App | N/A | Yes | |
iOS App | |||
iOS App | N/A | Yes | |
Mic Quality | |||
Mic Quality | 2.5/10 | 8.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.5/10 | 8.2/10 | |
Comfort score | |||
Comfort score | 7/10 | 7.6/10 | |
Size | |||
Size | Large | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 27 Grams | 238 Grams | |
Microphone style | |||
Microphone style | N/A | Integrated | |
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."
Sennheiser HD 350BT
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Dig into reviews and images
Soundguys
Lily Katz | September 2023
"Sennheiser nails just nearly everything about the Sennheiser HD 350BT headphones. Sound quality is excellent, and the high-quality Bluetooth codec support is a rarity at this price point. If you don’t care for high-tech features like automatic ear detection, you’ll be delighted with these portable headphones."
Get a great deal on the KZ ZSN Pro X or the Sennheiser HD 350BT
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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