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What we think
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Updated April 10, 2024·
If you're on a tight budget and primarily need earbuds for wired listening with good overall sound quality for music and TV, KZ ZSN Pro X could be suitable. These offer detailed audio with detachable cables and are suitable for air travel. However, they lack wireless connectivity and features like active noise cancelling, which are present in the Sennheiser Momentum True Wireless 4. Sennheiser's option provides superior noise isolation, battery life, wireless features, and aptX Lossless for high-quality audio streaming, making them a versatile choice for various activities, including calls, meetings, and exercise. If wireless freedom, advanced features, and robust build quality are top priorities and cost is not a concern, Sennheiser's earbuds would be the better choice. 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 Momentum True Wireless 4.
Advantages of the Sennheiser Momentum True Wireless 4
- Good for phone calls
- Excellent for gaming
- Very good for TV and video
- Very good for exercise
- Very good for air travel
- Very good for podcasts and audiobooks
Key differences
Gaming
5.9
9.1
The Sennheiser Momentum True Wireless 4 is excellent for gaming, while the KZ ZSN Pro X is poor.
Phone Calls
3.1
7.2
The Sennheiser Momentum True Wireless 4 is good for phone calls, while the KZ ZSN Pro X is poor.
Podcasts and Audiobooks
4.7
8.1
The Sennheiser Momentum True Wireless 4 is very good for podcasts and audiobooks, while the KZ ZSN Pro X is poor.
TV and Video
7.3
8.0
The Sennheiser Momentum True Wireless 4 is very good for TV and video, while the KZ ZSN Pro X is good.
Noise Reduction
6.0
8.3
The Sennheiser Momentum True Wireless 4 is very good for noise reduction, while the KZ ZSN Pro X is only fair.
Battery
N/A
7.5 Hours
The KZ ZSN Pro X does not have a battery. The Sennheiser Momentum True Wireless 4 has 7.5 hours of battery life.
Cost
$24
$300
$0
$100
$200
$300
$400
The KZ ZSN Pro X has a price of $24 and the Sennheiser Momentum True Wireless 4 costs $300.
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Key similarities
Music
7.0
7.5
The Sennheiser Momentum True Wireless 4 and KZ ZSN Pro X are both good for music.
Build Quality
8.5
8.9
The Sennheiser Momentum True Wireless 4 and KZ ZSN Pro X both have very good build quality.
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How the KZ ZSN Pro X and the Sennheiser Momentum True Wireless 4 compare to other earbuds and headphones
Spec Comparison
 |  | |
| KZ ZSN Pro X | Sennheiser Momentum True Wireless 4 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$24 | $300 | ||
Brand | |||
Brand | KZ | Sennheiser | |
Release Date | |||
Release Date | June 1, 2020 | March 1, 2024 | |
Form Factor | |||
Form Factor | Earbuds | Earbuds | |
Connectivity | |||
Connectivity | Wired | Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7/10 | 7.5/10 | |
Phone Calls Score | |||
Phone Calls Score | 3.1/10 | 7.2/10 | |
Gaming Score | |||
Gaming Score | 6/10 | 9.1/10 | |
TV and Video Score | |||
TV and Video Score | 7.3/10 | 8.1/10 | |
Exercise Score | |||
Exercise Score | 4.2/10 | 8.3/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | N/A | 7.5 Hours | |
Wireless charging | |||
Wireless charging | N/A | Yes | |
Charging time | |||
Charging time | N/A | 2 Hours | |
Bluetooth version | |||
Bluetooth version | N/A | 5.4 | |
Case Battery Life | |||
Case Battery Life | N/A | 30 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | Yes | |
Noise Reduction Score | |||
Noise Reduction Score | 6/10 | 8.4/10 | |
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 | 8.9/10 | |
Comfort score | |||
Comfort score | 7/10 | 7.6/10 | |
Size | |||
Size | Large | Medium | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 27 Grams | 5.8 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 Momentum True Wireless 4
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What HiFi
Andy Madden | January 2024
"It’s fair to say our brief time with the Sennheiser Momentum True Wireless 4 was a generally positive one. Comfort levels seem similar to what we have experienced before and the general flavour of sound was to our liking although we need to get a pair in to test and put up against the big rivals at the money from Bose and Sony. It could be an interesting contest."
Get a great deal on the KZ ZSN Pro X or the Sennheiser Momentum True Wireless 4
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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