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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated April 11, 2024·
budget-friendly options, each offering different advantages. The Koss KSC75 headphones provide a very good overall sound quality, are better suited for TV and video with a good score, and have a unique clip-on open-back design that might contribute to a wider soundstage. However, these are not wireless, have no mic, and their build quality isn't as robust. On the other hand, the KZ ZSN Pro X earbuds offer good sound quality with a closed design that provides some noise isolation, a detachable cable, and better build quality, but they rank lower for activities like exercise and air travel. If your preference leans towards immersive open-back audio for at-home listening, go for the KSC75, whereas if you value portability, noise isolation, and the flexibility of a detachable cable, the ZSN Pro X might be the better choice. Neither option is optimal for calls or gaming due to poor mic quality, and both lack wireless capabilities and active noise cancelling. 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 Koss KSC75
- Very good for music
- Good for podcasts and audiobooks
Advantages of the KZ ZSN Pro X
- Good for air travel
Key differences
Music
8.3
7.0
The Koss KSC75 is very good for music, while the KZ ZSN Pro X is good.
Phone Calls
4.8
3.1
The Koss KSC75 and KZ ZSN Pro X are both poor for phone calls, though the Koss KSC75 is somewhat better.
Podcasts and Audiobooks
7.5
4.7
The Koss KSC75 is good for podcasts and audiobooks, while the KZ ZSN Pro X is poor.
Noise Reduction
2.5
6.0
The KZ ZSN Pro X is only fair for noise reduction, while the Koss KSC75 is poor.
Cost
$20
$24
$0
$10
$20
$30
$40
$50
The Koss KSC75 has a price of $20 and the KZ ZSN Pro X costs $24.
Build Quality
5.6
8.5
The KZ ZSN Pro X has very good build quality, while the Koss KSC75 has poor build quality.
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Key similarities
Gaming
6.4
5.9
Although they have very similar scores, PerfectRec considers Koss KSC75 to be only fair for gaming, while the KZ ZSN Pro X is poor.
TV and Video
7.7
7.3
The Koss KSC75 and KZ ZSN Pro X are both good for TV and video.
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How the Koss KSC75 and the KZ ZSN Pro X compare to other earbuds and headphones
Spec Comparison
 |  | |
| Koss KSC75 | KZ ZSN Pro X |
GENERAL | |||
|---|---|---|---|
| Price | |||
$20 | $24 | ||
Brand | |||
Brand | Koss | KZ | |
Release Date | |||
Release Date | January 1, 2005 | June 1, 2020 | |
Form Factor | |||
Form Factor | Headphones | Earbuds | |
Connectivity | |||
Connectivity | Wired | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.3/10 | 7/10 | |
Phone Calls Score | |||
Phone Calls Score | 4.9/10 | 3.1/10 | |
Gaming Score | |||
Gaming Score | 6.5/10 | 6/10 | |
TV and Video Score | |||
TV and Video Score | 7.7/10 | 7.3/10 | |
Exercise Score | |||
Exercise Score | 4.3/10 | 4.2/10 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | No | |
Noise Reduction Score | |||
Noise Reduction Score | 2.5/10 | 6/10 | |
Virtual Surround | |||
Virtual Surround | N/A | No | |
Mic Quality | |||
Mic Quality | N/A | 2.5/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 5.7/10 | 8.5/10 | |
Comfort score | |||
Comfort score | 7/10 | 7/10 | |
Size | |||
Size | N/A | Large | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 45.3 Grams | 27 Grams | |
Waterproof Rating | |||
Waterproof Rating | 0 | 0 | |
Shopping
Koss KSC75
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Dig into reviews and images
InEar Fidelity
Crinacle | June 2022
"Let’s not insult the KSC75 by saying that it’s simply good for the price… because it’s far more than that. It basically has a monopoly at its asking price, and could still give modern budget headphones a run for their money 15 years after its release. The KSC75 is the world’s best not-headphone."
KZ ZSN Pro X
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Soundguys
Jasper Lastoria | April 2023
"The KZ ZSN PRO X offers superb sound for very little money, like under $30 USD. It has some rough edges with a plastic seam on the cable that can rub on your ear, and the bud is a bit large. The tech isn't cutting edge, but new doesn't always equal better. You should try it."
Get a great deal on the Koss KSC75 or the KZ ZSN Pro X
About Koss
Koss is an American headphone manufacturer established in 1953. In 1958, they created the first set of stereophones, that is headphones with stereo sound, and in 1984 they released the world-famous Porta Pro, a set of on-ear headphones that has remained essentially unchanged for more than 30 years and that is still made, sold and loved by many audio enthusiasts around the world today.
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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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Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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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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