A comparison of specs, key information, reviews, and best pricing from top retailers
Last updated -- hours ago | Report incorrect information
ER2SE
Company ProductName Specs




ZSN Pro
Company ProductName Specs




What we think

Chevron down
PerfectRec Logo
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·

The Etymotic ER2SE offers superior overall sound quality compared to the KZ ZSN Pro and excels in noise isolation, making it a strong choice for environments where you want to block out surrounding noises. However, the Etymotics may not be as comfortable for everyone due to their deep-insert design, and they're less suitable for exercise due to a lower score in that area. On the other hand, the KZ ZSN Pro, while not matching the Etymotic's sound quality, offers better comfort and is significantly more affordable, making it a compelling option if you're on a budget and prefer a more comfortable fit for extended use. Neither model features a microphone or built-in controls, which may affect your decision if you need these features for calls or easy accessibility. 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 KZ ZSN Pro
  • The KZ ZSN Pro has no clear advantages over the Etymotic ER2SE.

Key differences

Chevron down

Music

8.8
ER2SE
ZSN Pro
7.7
The Etymotic ER2SE is very good for music, while the KZ ZSN Pro is good.

Phone Calls

4.9
ER2SE
ZSN Pro
3.1
The Etymotic ER2SE and KZ ZSN Pro are both poor for phone calls, though the Etymotic ER2SE is somewhat better.

Podcasts and Audiobooks

7.6
ER2SE
ZSN Pro
4.9
The Etymotic ER2SE is good for podcasts and audiobooks, while the KZ ZSN Pro is poor.

Noise Reduction

9.1
ER2SE
ZSN Pro
5.3
The Etymotic ER2SE is excellent for noise reduction, while the KZ ZSN Pro is poor.

Cost

$100
ER2SE
ZSN Pro
$25
Product image
Product image

$0

$50

$100

$150

$200

The Etymotic ER2SE has a price of $100 and the KZ ZSN Pro costs $25.
Image of Earbuds & Headphones
Let Us Help Find Your Perfect Headphones
Find your new headphones

Key similarities

Chevron down

Gaming

6.2
ER2SE
ZSN Pro
6.0
The Etymotic ER2SE and KZ ZSN Pro are both only fair for gaming.

TV and Video

7.8
ER2SE
ZSN Pro
7.4
The Etymotic ER2SE and KZ ZSN Pro are both good for TV and video.

Build Quality

9.0
ER2SE
ZSN Pro
9.0
The Etymotic ER2SE and KZ ZSN Pro both have excellent build quality.

Give feedback

We’re constantly working to improve.

How the Etymotic ER2SE and the KZ ZSN Pro compare to other earbuds and headphones

Chevron down

Spec Comparison

Chevron down
Etymotic ER2SEKZ ZSN Pro
Etymotic ER2SEKZ ZSN Pro

GENERAL

Price
$100
$25
Brand
EtymoticKZ
Release Date
February 1, 2019March 1, 2019
Form Factor
EarbudsEarbuds
Connectivity
WiredWired

SOUND

Music Score
8.9/107.8/10
Phone Calls Score
5/103.2/10
Gaming Score
6.3/106/10
TV and Video Score
7.9/107.5/10
Exercise Score
4.2/104.3/10

FEATURES

Active Noise Cancelling
NoNo
Noise Reduction Score
9.1/105.3/10

BUILD AND DESIGN

Build Quality
9/109/10
Comfort score
6/107.6/10
Size
SmallLarge
Weight (headset or single earbud)
4 Grams7 Grams
Waterproof Rating
00

Shopping

Chevron down

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."

KZ ZSN Pro

See more

Dig into reviews and images

PrimeAudio

David Becker | 2019
"Undoubtedly the focus and the star of the show, the ZSN Pro’s bass is big, bold and bangin’. The amount of gusto in the low end should satisfy anyone who likes a large lick of bass and even certified bassheads will probably get a kick out of this."

Get a great deal on the Etymotic ER2SE or the KZ ZSN Pro

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.

Give feedback

We're constantly perfecting our model

Earbuds or Headphones guides you might be interested in

Chevron down

FAQs

Chevron down

FAQs about earbuds and headphones

Questions about PerfectRec >

Why trust us

Chevron down
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

Color LTT LogoGeekwire logo9to5 Mac logoPhone Arena LogoColor Daring Fireball logo