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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
If you're looking for detail in your music with excellent noise isolation, the Etymotic ER2SE earbuds excel in providing an in-ear monitor experience which can be great for critical listening. However, they have a deep insertion design which may be uncomfortable for some users. On the other hand, the Sennheiser HD 350BT are over-ear headphones that offer more comfort for longer listening sessions, along with the convenience of wireless Bluetooth connectivity, but they might have a bulkier form factor compared to earbuds and potentially more latency, which can affect watching videos or gaming. The Sennheiser also has a built-in microphone which is useful for calls, an advantage that the Etymotic lacks. Determine what your priorities are: comfort, portability, sound isolation, mic presence, or wireless convenience to make the right choice. 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 Etymotic ER2SE
- Very good for music
Advantages of the Sennheiser HD 350BT
- Good for phone calls
- Excellent for gaming
- Excellent for TV and video
- Very good for air travel
- Very good for podcasts and audiobooks
Key differences
Music
8.8
7.0
The Etymotic ER2SE is very good for music, while the Sennheiser HD 350BT is good.
Gaming
6.2
9.1
The Sennheiser HD 350BT is excellent for gaming, while the Etymotic ER2SE is only fair.
Phone Calls
4.9
7.4
The Sennheiser HD 350BT is good for phone calls, while the Etymotic ER2SE is poor.
Podcasts and Audiobooks
7.6
8.3
The Sennheiser HD 350BT is very good for podcasts and audiobooks, while the Etymotic ER2SE is good.
TV and Video
7.8
9.0
The Sennheiser HD 350BT is excellent for TV and video, while the Etymotic ER2SE is good.
Noise Reduction
9.1
6.0
The Etymotic ER2SE is excellent for noise reduction, while the Sennheiser HD 350BT is only fair.
Battery
N/A
33.0 Hours
The Etymotic ER2SE does not have a battery. The Sennheiser HD 350BT has 33 hours of battery life.
Cost
$100
$80
$40
$60
$80
$100
$120
$140
$160
The Etymotic ER2SE has a price of $100 and the Sennheiser HD 350BT costs $80.
Build Quality
9.0
8.2
The Etymotic ER2SE has excellent build quality, while the Sennheiser HD 350BT has very good build quality.
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How the Etymotic ER2SE and the Sennheiser HD 350BT compare to other earbuds and headphones
Spec Comparison
 |  | |
| Etymotic ER2SE | Sennheiser HD 350BT |
GENERAL | |||
|---|---|---|---|
| Price | |||
$100 | $80 | ||
Brand | |||
Brand | Etymotic | Sennheiser | |
Release Date | |||
Release Date | February 1, 2019 | January 1, 2020 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wired | Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.9/10 | 7/10 | |
Phone Calls Score | |||
Phone Calls Score | 5/10 | 7.4/10 | |
Gaming Score | |||
Gaming Score | 6.3/10 | 9.1/10 | |
TV and Video Score | |||
TV and Video Score | 7.9/10 | 9.1/10 | |
Exercise Score | |||
Exercise Score | 4.2/10 | 6.3/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | N/A | 33 Hours | |
Wireless charging | |||
Wireless charging | N/A | No | |
Charging time | |||
Charging time | N/A | 2 Hours | |
Bluetooth version | |||
Bluetooth version | N/A | 5 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | No | |
Noise Reduction Score | |||
Noise Reduction Score | 9.1/10 | 6/10 | |
Virtual Surround | |||
Virtual Surround | N/A | No | |
Android App | |||
Android App | N/A | Yes | |
iOS App | |||
iOS App | N/A | Yes | |
Mic Quality | |||
Mic Quality | N/A | 8.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 9/10 | 8.2/10 | |
Comfort score | |||
Comfort score | 6/10 | 7.6/10 | |
Size | |||
Size | Small | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 4 Grams | 238 Grams | |
Microphone style | |||
Microphone style | N/A | Integrated | |
Shopping
Etymotic ER2SE
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Dig into reviews and images
Sound Guys
Lily Katz | April 2022
"Etymotic isn’t playing around: it takes audio seriously and has mastered the art of the noise-isolation earphone. Sure, the fit of the earbuds looks silly but it’s a signature Etymotic thing and could be considered charming by some. If you’re looking for best-in-class audio for a realistic price, the ER2SE is it."
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."
Get a great deal on the Etymotic ER2SE or the Sennheiser HD 350BT
About Etymotic
Etymotic Research is an American based research, development and manufacturing company founded in 1983. They invented the first insert earphones that were used for the diagnosis and research of hearing loss and other auditory disorders. They went on to pioneer the market of high fidelity, isolating, in-ear earphones.
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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