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What we think
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Updated January 10, 2024·
The Sennheiser CX300S earbuds are more portable and offer excellent noise isolation, making them ideal for use in noisy environments or during exercise. However, they lack a microphone, which could be a downside if you need to take calls. On the other hand, the Sennheiser HD 400S headphones provide a higher overall sound quality and are more comfortable for extended listening, plus they have a good microphone for calls and meetings. The HD 400S is also suitable for gaming and watching TV due to their low latency, and are the more affordable option, but they are less portable than the CX300S. 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 Sennheiser CX300S
- The Sennheiser CX300S has no clear advantages over the Sennheiser HD 400S.
Advantages of the Sennheiser HD 400S
- Good for music
- Very good for phone calls
- Very good for gaming
- Good for podcasts and audiobooks
Key differences
Gaming
6.1
8.6
The Sennheiser HD 400S is very good for gaming, while the Sennheiser CX300S is only fair.
Phone Calls
3.0
8.2
The Sennheiser HD 400S is very good for phone calls, while the Sennheiser CX300S is poor.
Podcasts and Audiobooks
4.7
7.6
The Sennheiser HD 400S is good for podcasts and audiobooks, while the Sennheiser CX300S is poor.
Noise Reduction
7.0
5.3
The Sennheiser CX300S is good for noise reduction, while the Sennheiser HD 400S is poor.
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Key similarities
Music
6.9
7.1
Although they have very similar scores, PerfectRec considers Sennheiser HD 400S to be good for music, while the Sennheiser CX300S is only fair.
TV and Video
7.3
7.6
The Sennheiser HD 400S and Sennheiser CX300S are both good for TV and video.
Cost
$50
$50
$0
$10
$20
$30
$40
$50
The Sennheiser CX300S has a price of $50 and the Sennheiser HD 400S costs $50.
Build Quality
8.0
8.5
The Sennheiser HD 400S and Sennheiser CX300S both have very good build quality.
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How the Sennheiser CX300S and the Sennheiser HD 400S compare to other earbuds and headphones
Spec Comparison
 |  | |
| Sennheiser CX300S | Sennheiser HD 400S |
GENERAL | |||
|---|---|---|---|
| Price | |||
$50 | $50 | ||
Brand | |||
Brand | Sennheiser | Sennheiser | |
Release Date | |||
Release Date | February 1, 2019 | 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 | 6.1/10 | 8.7/10 | |
TV and Video Score | |||
TV and Video Score | 7.4/10 | 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 | 7/10 | 5.3/10 | |
Virtual Surround | |||
Virtual Surround | No | No | |
Mic Quality | |||
Mic Quality | N/A | 8.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8/10 | 8.5/10 | |
Comfort score | |||
Comfort score | 7.6/10 | 8.4/10 | |
Size | |||
Size | Small | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 12 Grams | 213 Grams | |
Microphone style | |||
Microphone style | N/A | Integrated | |
Shopping
Sennheiser CX300S
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Dig into reviews and images
Major HiFi
Carroll Moore | April 2019
"Sennheiser offers impressive bang for your buck when it comes to the CX 300S. Built like a tank and sounding surprisingly good for such a budget-minded earphone, the CX 300S out-classes many of its would-be competitors. Functional but beautiful, it’s the perfect in-ear listening solution for anyone who wants to hear everything and look good doing it."
Sennheiser HD 400S
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Dig into reviews and images
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 Sennheiser CX300S 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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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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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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