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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated April 11, 2024·
If you are on a tight budget and prefer earbuds, the KZ ZSN Pro X would be suitable as it's less expensive, and its sound quality is considered good for its price. However, its microphone quality is poor, making it less ideal for calls and its lack of wireless capability could be inconvenient. On the other hand, if you can spend a bit more, the Sennheiser HD 400S offers better comfort, mic quality, and is better for calls and gaming. The Sennheisers are over-ear headphones and will be bulkier to transport compared to the compact KZ earbuds. Both lack active noise canceling and wireless features, so if either is crucial for you, you might want to consider other options. 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 400S.
Advantages of the Sennheiser HD 400S
- Very good for phone calls
- Very good for gaming
- Good for podcasts and audiobooks
Key differences
Gaming
5.9
8.6
The Sennheiser HD 400S is very good for gaming, while the KZ ZSN Pro X is poor.
Phone Calls
3.1
8.2
The Sennheiser HD 400S is very good for phone calls, while the KZ ZSN Pro X is poor.
Podcasts and Audiobooks
4.7
7.6
The Sennheiser HD 400S is good for podcasts and audiobooks, while the KZ ZSN Pro X is poor.
Noise Reduction
6.0
5.3
The KZ ZSN Pro X is only fair for noise reduction, while the Sennheiser HD 400S is poor.
Cost
$24
$50
$0
$10
$20
$30
$40
$50
The KZ ZSN Pro X has a price of $24 and the Sennheiser HD 400S costs $50.
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Key similarities
Music
7.0
7.1
The Sennheiser HD 400S and KZ ZSN Pro X are both good for music.
TV and Video
7.3
7.6
The Sennheiser HD 400S and KZ ZSN Pro X are both good for TV and video.
Build Quality
8.5
8.5
The KZ ZSN Pro X and Sennheiser HD 400S both have very good build quality.
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How the KZ ZSN Pro X and the Sennheiser HD 400S compare to other earbuds and headphones
Spec Comparison
 |  | |
| KZ ZSN Pro X | Sennheiser HD 400S |
GENERAL | |||
|---|---|---|---|
| Price | |||
$24 | $50 | ||
Brand | |||
Brand | KZ | Sennheiser | |
Release Date | |||
Release Date | June 1, 2020 | January 1, 2019 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wired | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7/10 | 7.2/10 | |
Phone Calls Score | |||
Phone Calls Score | 3.1/10 | 8.2/10 | |
Gaming Score | |||
Gaming Score | 6/10 | 8.7/10 | |
TV and Video Score | |||
TV and Video Score | 7.3/10 | 7.7/10 | |
Exercise Score | |||
Exercise Score | 4.2/10 | 4.2/10 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | No | |
Noise Reduction Score | |||
Noise Reduction Score | 6/10 | 5.3/10 | |
Virtual Surround | |||
Virtual Surround | No | No | |
Mic Quality | |||
Mic Quality | 2.5/10 | 8.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.5/10 | 8.5/10 | |
Comfort score | |||
Comfort score | 7/10 | 8.4/10 | |
Size | |||
Size | Large | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 27 Grams | 213 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 400S
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Headphone Dungeon
Jim | August 2022
"Sennheiser has done it again. The HD 400S performs well beyond its price range and is one of the better budget model headphones I’ve tried. It has very few bells and whistles and offers a simple means of listening that still delivers amazing clarity and quality. If you need a good first pair of headphones or need something that you can take out of the house, then the HD 400S is definitely for you."
Get a great deal on the KZ ZSN Pro X or the Sennheiser HD 400S
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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Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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