A comparison of specs, key information, reviews, and best pricing from top retailers
Last updated -- hours ago | Report incorrect information
Company ProductName Specs
Company ProductName Specs
What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
If you value portability and the convenience of wireless earbuds for use during exercise or while on the move, the Razer Hammerhead True Wireless will suit you well, plus they have a low latency mode great for gaming. However, if your priority is sound quality and comfort for extended listening periods, the Sennheiser HD 400S headphones are the better option. While the Sennheiser lacks built-in controls and is wired, their over-ear design may offer a more immersive experience for TV, music, and book/podcast listening. Keep in mind, the Razer Hammerhead is more expensive, but they come with features like sweatproof certification and game-focused enhancements. 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 Razer Hammerhead True Wireless
- Good for exercise
- Very good for air travel
Advantages of the Sennheiser HD 400S
- Good for music
- Very good for phone calls
- Good for podcasts and audiobooks
Key differences
Music
6.6
7.1
The Sennheiser HD 400S is good for music, while the Razer Hammerhead True Wireless is only fair.
Phone Calls
5.4
8.2
The Sennheiser HD 400S is very good for phone calls, while the Razer Hammerhead True Wireless is poor.
Podcasts and Audiobooks
5.6
7.6
The Sennheiser HD 400S is good for podcasts and audiobooks, while the Razer Hammerhead True Wireless is poor.
Noise Reduction
8.1
5.3
The Razer Hammerhead True Wireless is very good for noise reduction, while the Sennheiser HD 400S is poor.
Battery
5.0 Hours
N/A
The Razer Hammerhead True Wireless has 5 hours of battery life. The Sennheiser HD 400S does not have a battery.
Cost
$95
$50
$0
$50
$100
$150
$200
The Razer Hammerhead True Wireless has a price of $95 and the Sennheiser HD 400S costs $50.
Let Us Help Find Your Perfect Headphones
Find your new headphones
Key similarities
Gaming
8.6
8.6
The Sennheiser HD 400S and Razer Hammerhead True Wireless are both very good for gaming.
TV and Video
7.9
7.6
The Razer Hammerhead True Wireless and Sennheiser HD 400S are both good for TV and video.
Build Quality
8.7
8.5
The Razer Hammerhead True Wireless and Sennheiser HD 400S both have very good build quality.
Give feedback
We’re constantly working to improve.
How the Razer Hammerhead True Wireless and the Sennheiser HD 400S compare to other earbuds and headphones
Spec Comparison
 |  | |
| Razer Hammerhead True Wireless | Sennheiser HD 400S |
GENERAL | |||
|---|---|---|---|
| Price | |||
$95 | $50 | ||
Brand | |||
Brand | Razer | Sennheiser | |
Release Date | |||
Release Date | August 1, 2021 | January 1, 2019 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 6.6/10 | 7.2/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.5/10 | 8.2/10 | |
Gaming Score | |||
Gaming Score | 8.7/10 | 8.7/10 | |
TV and Video Score | |||
TV and Video Score | 7.9/10 | 7.7/10 | |
Exercise Score | |||
Exercise Score | 7.3/10 | 4.2/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 5 Hours | N/A | |
Wireless charging | |||
Wireless charging | No | N/A | |
Charging time | |||
Charging time | 1 Hours | N/A | |
Bluetooth version | |||
Bluetooth version | 5.2 | N/A | |
Case Battery Life | |||
Case Battery Life | 36 | N/A | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | Yes | No | |
Noise Reduction Score | |||
Noise Reduction Score | 8.2/10 | 5.3/10 | |
Virtual Surround | |||
Virtual Surround | No | No | |
Android App | |||
Android App | Yes | N/A | |
iOS App | |||
iOS App | Yes | N/A | |
Mic Quality | |||
Mic Quality | 8.5/10 | 8.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.7/10 | 8.5/10 | |
Comfort score | |||
Comfort score | 8.2/10 | 8.4/10 | |
Size | |||
Size | Small | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 5 Grams | 213 Grams | |
Microphone style | |||
Microphone style | Integrated | Integrated | |
Shopping
Razer Hammerhead True Wireless
See more
Dig into reviews and images
The Verge
Chris Welch | August 2019
"This latest set is more “Pro” than not in both looks and features: they offer active noise cancellation, a low-latency gaming mode, and have switched to a in-ear design with silicone tips. Just like many of the company’s laptops and gaming accessories, the 2021 Hammerhead True Wireless include Razer’s full Chroma RGB system. It makes for what Razer calls “the ultimate wireless earbud flex.”"
Sennheiser HD 400S
See more
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 Razer Hammerhead True Wireless or the Sennheiser HD 400S
About Razer
Razer is an American-Singaporean hardware manufacturer aimed specifically toward the gaming market. They manufacture a very wide array of gaming laptops, tablets, phones, peripherals and, of course, headphones and earbuds both wired and wireless. Since 2016, Razer has owned the THX suite, aimed at quality assurance of audiovisual systems such as speaker sets, video game consoles and even movie theaters.
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.
Give feedback
We're constantly perfecting our model
Earbuds or Headphones guides you might be interested in
More comparisons for you
Compare Razer Hammerhead True Wireless vs. HyperX Cloud II
VS
Compare Razer Hammerhead True Wireless vs. "Nothing" Brand Ear Stick
VS
Compare Razer Hammerhead True Wireless vs. Audio Technica ATH M40X
VS
Compare Sennheiser HD 400S vs. JBL Tune Buds
VS
Compare Sennheiser HD 400S vs. Soundcore Life Q20
VS
Compare Sennheiser HD 400S vs. JLab Go Work Wireless
VS
FAQs
FAQs about earbuds and headphones
Why trust us
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.
By the numbers
108
Earbuds and headphones evaluated
11,340
Earbuds and headphones stats compiled
15
Proprietary Earbuds and headphones ratings developed
94,700
Recommendations made
14,205
Consumer hours saved
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.
Jason Lew
Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.
Chandradeep Chowdhury
Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
Luis Torres
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.
Featured in
