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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
The Sennheiser HD 350BT offers excellent overall sound quality and is well-suited for gaming and TV with its low latency feature, but it's wireless only and more expensive. In contrast, the HD 400S, being less costly, provides good sound and comfort, comes with a detachable cable allowing wired use but lacks wireless capability and the low latency feature, making it less ideal for gaming and TV. The HD 350BT also has better battery life. If wireless convenience and low latency are priorities, and you're willing to invest more, the HD 350BT would be better; otherwise, the HD 400S might be more cost-effective for general use. 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 HD 350BT
- Excellent for gaming
- Excellent for TV and video
- Very good for air travel
- Very good for podcasts and audiobooks
Advantages of the Sennheiser HD 400S
- Very good for phone calls
Key differences
Phone Calls
7.4
8.2
The Sennheiser HD 400S is very good for phone calls, while the Sennheiser HD 350BT is good.
Podcasts and Audiobooks
8.3
7.6
The Sennheiser HD 350BT is very good for podcasts and audiobooks, while the Sennheiser HD 400S is good.
TV and Video
9.0
7.6
The Sennheiser HD 350BT is excellent for TV and video, while the Sennheiser HD 400S is good.
Noise Reduction
6.0
5.3
The Sennheiser HD 350BT is only fair for noise reduction, while the Sennheiser HD 400S is poor.
Battery
33.0 Hours
N/A
The Sennheiser HD 350BT has 33 hours of battery life. The Sennheiser HD 400S does not have a battery.
Cost
$80
$61
$50
$60
$70
$80
$90
$100
The Sennheiser HD 350BT has a price of $80 and the Sennheiser HD 400S costs $61.
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Key similarities
Music
7.0
7.1
The Sennheiser HD 400S and Sennheiser HD 350BT are both good for music.
Gaming
9.1
8.6
Although they have very similar scores, PerfectRec considers Sennheiser HD 350BT to be excellent for gaming, while the Sennheiser HD 400S is very good.
Build Quality
8.2
8.5
The Sennheiser HD 400S and Sennheiser HD 350BT both have very good build quality.
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How the Sennheiser HD 350BT and the Sennheiser HD 400S compare to other earbuds and headphones
Spec Comparison
 |  | |
| Sennheiser HD 350BT | Sennheiser HD 400S |
GENERAL | |||
|---|---|---|---|
| Price | |||
$80 | $61 | ||
Brand | |||
Brand | Sennheiser | Sennheiser | |
Release Date | |||
Release Date | January 1, 2020 | January 1, 2019 | |
Form Factor | |||
Form Factor | Headphones | Headphones | |
Connectivity | |||
Connectivity | Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7/10 | 7.2/10 | |
Phone Calls Score | |||
Phone Calls Score | 7.4/10 | 8.2/10 | |
Gaming Score | |||
Gaming Score | 9.1/10 | 8.7/10 | |
TV and Video Score | |||
TV and Video Score | 9.1/10 | 7.7/10 | |
Exercise Score | |||
Exercise Score | 6.3/10 | 4.2/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 33 Hours | N/A | |
Wireless charging | |||
Wireless charging | No | N/A | |
Charging time | |||
Charging time | 2 Hours | N/A | |
Bluetooth version | |||
Bluetooth version | 5 | N/A | |
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 | |
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 | 8.2/10 | 8.5/10 | |
Comfort score | |||
Comfort score | 7.6/10 | 8.4/10 | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 238 Grams | 213 Grams | |
Microphone style | |||
Microphone style | Integrated | Integrated | |
Waterproof Rating | |||
Waterproof Rating | 0 | 0 | |
Shopping
Sennheiser HD 350BT
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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."
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 Sennheiser HD 350BT 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
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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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