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HD 350BT
Company ProductName Specs




HD 400S
Company ProductName Specs




What we think

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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

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Phone Calls

7.4
HD 350BT
HD 400S
8.2
The Sennheiser HD 400S is very good for phone calls, while the Sennheiser HD 350BT is good.

Podcasts and Audiobooks

8.3
HD 350BT
HD 400S
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
HD 350BT
HD 400S
7.6
The Sennheiser HD 350BT is excellent for TV and video, while the Sennheiser HD 400S is good.

Noise Reduction

6.0
HD 350BT
HD 400S
5.3
The Sennheiser HD 350BT is only fair for noise reduction, while the Sennheiser HD 400S is poor.

Battery

33.0 Hours
HD 350BT
HD 400S
N/A
The Sennheiser HD 350BT has 33 hours of battery life. The Sennheiser HD 400S does not have a battery.

Cost

$80
HD 350BT
HD 400S
$50
Product image
Product image

$0

$20

$40

$60

$80

$100

The Sennheiser HD 350BT has a price of $80 and the Sennheiser HD 400S costs $50.
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Key similarities

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Music

7.0
HD 350BT
HD 400S
7.1
The Sennheiser HD 400S and Sennheiser HD 350BT are both good for music.

Gaming

9.1
HD 350BT
HD 400S
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
HD 350BT
HD 400S
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

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Spec Comparison

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Sennheiser HD 350BTSennheiser HD 400S
Sennheiser HD 350BTSennheiser HD 400S

GENERAL

Price
$80
$50
Brand
SennheiserSennheiser
Release Date
January 1, 2020January 1, 2019
Form Factor
HeadphonesHeadphones
Connectivity
WirelessWired

SOUND

Music Score
7/107.2/10
Phone Calls Score
7.4/108.2/10
Gaming Score
9.1/108.7/10
TV and Video Score
9.1/107.7/10
Exercise Score
6.3/104.2/10

PERFORMANCE

Battery life
33 HoursN/A
Wireless charging
NoN/A
Charging time
2 HoursN/A
Bluetooth version
5N/A

FEATURES

Active Noise Cancelling
NoNo
Noise Reduction Score
6/105.3/10
Virtual Surround
NoNo
Android App
YesN/A
iOS App
YesN/A
Mic Quality
8.5/108.5/10

BUILD AND DESIGN

Build Quality
8.2/108.5/10
Comfort score
7.6/108.4/10
Weight (headset or single earbud)
238 Grams213 Grams
Microphone style
IntegratedIntegrated
Waterproof Rating
00

Shopping

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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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Why trust us

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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.

By the numbers

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Earbuds and headphones evaluated
11,340
Earbuds and headphones stats compiled
15
Proprietary Earbuds and headphones ratings developed
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Recommendations made
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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.

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