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·
Choosing between the Etymotic ER2SE and the Sennheiser CX300S, consider the following: the Etymotic offers exceptional noise isolation and overall sound quality, making them ideal for focused listening and environments where you want to block out the world. They also come with a detachable cable, which can be a bonus for durability. On the other hand, the Sennheisers are more comfortable, which might be better for longer listening sessions, and they are also lighter, enhancing portability. Lastly, if cost is a concern, the Sennheisers are somewhat less expensive while still delivering good sound quality, though not quite at the level of the Etymotics. 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
- Good for podcasts and audiobooks
Advantages of the Sennheiser CX300S
- Good for air travel
Key differences
Music
8.8
6.9
The Etymotic ER2SE is very good for music, while the Sennheiser CX300S is only fair.
Phone Calls
4.9
3.0
The Etymotic ER2SE and Sennheiser CX300S are both poor for phone calls, though the Etymotic ER2SE is somewhat better.
Podcasts and Audiobooks
7.6
4.7
The Etymotic ER2SE is good for podcasts and audiobooks, while the Sennheiser CX300S is poor.
Noise Reduction
9.1
7.0
The Etymotic ER2SE is excellent for noise reduction, while the Sennheiser CX300S is good.
Cost
$100
$50
$0
$50
$100
$150
$200
The Etymotic ER2SE has a price of $100 and the Sennheiser CX300S costs $50.
Build Quality
9.0
8.0
The Etymotic ER2SE has excellent build quality, while the Sennheiser CX300S has very good build quality.
Let Us Help Find Your Perfect Headphones
Find your new headphones
Key similarities
Gaming
6.2
6.1
The Etymotic ER2SE and Sennheiser CX300S are both only fair for gaming.
TV and Video
7.8
7.3
The Etymotic ER2SE and Sennheiser CX300S are both good for TV and video.
Give feedback
We’re constantly working to improve.
How the Etymotic ER2SE and the Sennheiser CX300S compare to other earbuds and headphones
Spec Comparison
 |  | |
| Etymotic ER2SE | Sennheiser CX300S |
GENERAL | |||
|---|---|---|---|
| Price | |||
$100 | $50 | ||
Brand | |||
Brand | Etymotic | Sennheiser | |
Release Date | |||
Release Date | February 1, 2019 | February 1, 2019 | |
Form Factor | |||
Form Factor | Earbuds | Earbuds | |
Connectivity | |||
Connectivity | Wired | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.9/10 | 7/10 | |
Phone Calls Score | |||
Phone Calls Score | 5/10 | 3.1/10 | |
Gaming Score | |||
Gaming Score | 6.3/10 | 6.1/10 | |
TV and Video Score | |||
TV and Video Score | 7.9/10 | 7.4/10 | |
Exercise Score | |||
Exercise Score | 4.2/10 | 4.2/10 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | No | |
Noise Reduction Score | |||
Noise Reduction Score | 9.1/10 | 7/10 | |
Virtual Surround | |||
Virtual Surround | N/A | No | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 9/10 | 8/10 | |
Comfort score | |||
Comfort score | 6/10 | 7.6/10 | |
Size | |||
Size | Small | Small | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 4 Grams | 12 Grams | |
Waterproof Rating | |||
Waterproof Rating | 0 | 0 | |
Shopping
Etymotic ER2SE
See more
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 CX300S
See more
Dig into reviews and images
Major HiFi
Carroll Moore | April 2019
"Sennheiser offers impressive bang for your buck when it comes to the CX 300S. Built like a tank and sounding surprisingly good for such a budget-minded earphone, the CX 300S out-classes many of its would-be competitors. Functional but beautiful, it’s the perfect in-ear listening solution for anyone who wants to hear everything and look good doing it."
Get a great deal on the Etymotic ER2SE or the Sennheiser CX300S
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.
Give feedback
We're constantly perfecting our model
Earbuds or Headphones guides you might be interested in
More comparisons for you
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
122,900
Recommendations made
18,435
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
