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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
If you prioritize sound quality and battery life for longer sessions, the Sennheiser HD 350BT might be more suitable, as they are over-ear headphones with superior audio and longer battery life. However, they are bulkier, making them less ideal for exercise and travel compared to the earbud design of the Bowers and Wilkins Pi5 S2. The Pi5 S2 earbuds are also better for noise isolation and portability, coming with features like a compact size and active noise cancelling, which the Sennheiser headphones lack. If you often make calls, the Sennheiser's microphone is of higher quality. Keep in mind that while the Bowers and Wilkins Pi5 S2 earbuds are pricier, they offer more modern features like wireless charging and support for a sweatproof design. 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 Bowers and Wilkins Pi5 S2
- The Bowers and Wilkins Pi5 S2 has no clear advantages over the Sennheiser HD 350BT.
Advantages of the Sennheiser HD 350BT
- Good for music
- Good for phone calls
- Excellent for gaming
- Excellent for TV and video
- Very good for podcasts and audiobooks
Key differences
Gaming
5.3
9.1
The Sennheiser HD 350BT is excellent for gaming, while the Bowers and Wilkins Pi5 S2 is poor.
Phone Calls
5.0
7.4
The Sennheiser HD 350BT is good for phone calls, while the Bowers and Wilkins Pi5 S2 is poor.
Podcasts and Audiobooks
5.6
8.3
The Sennheiser HD 350BT is very good for podcasts and audiobooks, while the Bowers and Wilkins Pi5 S2 is poor.
TV and Video
5.6
9.0
The Sennheiser HD 350BT is excellent for TV and video, while the Bowers and Wilkins Pi5 S2 is poor.
Noise Reduction
8.3
6.0
The Bowers and Wilkins Pi5 S2 is very good for noise reduction, while the Sennheiser HD 350BT is only fair.
Battery
5.0 Hours
33.0 Hours
The Bowers and Wilkins Pi5 S2 has 5 hours of battery life. The Sennheiser HD 350BT has 33 hours of battery life.
Cost
$181
$80
$50
$100
$150
$200
$250
The Bowers and Wilkins Pi5 S2 has a price of $181 and the Sennheiser HD 350BT costs $80.
Build Quality
8.9
8.2
The Bowers and Wilkins Pi5 S2 and Sennheiser HD 350BT both have very good build quality, though the Bowers and Wilkins Pi5 S2 has somewhat better build quality.
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Key similarities
Music
6.7
7.0
Although they have very similar scores, PerfectRec considers Sennheiser HD 350BT to be good for music, while the Bowers and Wilkins Pi5 S2 is only fair.
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How the Bowers and Wilkins Pi5 S2 and the Sennheiser HD 350BT compare to other earbuds and headphones
Spec Comparison
 |  | |
| Bowers and Wilkins Pi5 S2 | Sennheiser HD 350BT |
GENERAL | |||
|---|---|---|---|
| Price | |||
$181 | $80 | ||
Brand | |||
Brand | Bowers and Wilkins | Sennheiser | |
Release Date | |||
Release Date | January 1, 2023 | January 1, 2020 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wireless | Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 6.8/10 | 7/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.1/10 | 7.4/10 | |
Gaming Score | |||
Gaming Score | 5.3/10 | 9.1/10 | |
TV and Video Score | |||
TV and Video Score | 5.6/10 | 9.1/10 | |
Exercise Score | |||
Exercise Score | 6.3/10 | 6.3/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 5 Hours | 33 Hours | |
Wireless charging | |||
Wireless charging | Yes | No | |
Charging time | |||
Charging time | 0.75 Hours | 2 Hours | |
Bluetooth version | |||
Bluetooth version | 5 | 5 | |
Case Battery Life | |||
Case Battery Life | 19 | N/A | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | Yes | No | |
Noise Reduction Score | |||
Noise Reduction Score | 8.4/10 | 6/10 | |
Virtual Surround | |||
Virtual Surround | No | No | |
Android App | |||
Android App | Yes | Yes | |
iOS App | |||
iOS App | Yes | Yes | |
Mic Quality | |||
Mic Quality | 6.5/10 | 8.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.9/10 | 8.2/10 | |
Comfort score | |||
Comfort score | 8/10 | 7.6/10 | |
Size | |||
Size | Large | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 6 Grams | 238 Grams | |
Microphone style | |||
Microphone style | Integrated | Integrated | |
Shopping
Bowers and Wilkins Pi5 S2
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Dig into reviews and images
Major HiFi
Chris Golembeski | January 2023
"Bowers and Wilkins isn’t looking to make an obscure, premium wireless bud catered specifically towards audiophiles. Instead, it seems apparent that they’re going for the crown: a cool and popular look, an easy and comfortable fit, and an engaging stage with a great balance that is perfectly suited for mainstream listeners and audiophiles alike."
Sennheiser HD 350BT
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Dig into reviews and images
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."
Get a great deal on the Bowers and Wilkins Pi5 S2 or the Sennheiser HD 350BT
About Bowers and Wilkins
Bowers and Wilkins is a British audio equipment manufacturer with a focus on innovation and product development. It was founded by a couple of real-life James Bonds, the co-founders John Bowers and Roy Wilkins, who met while working for MI6 during World War II. The company keeps being favored by enthusiasts due to their sound quality, craftsmanship and signature aesthetics.
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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