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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated April 11, 2024·
If cost is your main concern and you prefer wired clip-on headphones, the Koss KSC75 offers very good sound quality for music but lacks features like a microphone or active noise cancelling. They aren't suitable for exercise or travel due to their poor isolation and are not sweatproof. The Sennheiser Momentum Sport earbuds, while more expensive, provide active noise cancellation, a very good microphone, sweat and dustproof features, and a dynamic listening experience suitable for various scenarios including calls, gaming, and exercise. They also offer heart rate and temperature tracking tailored for fitness enthusiasts. 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
Advantages of the Sennheiser Momentum Sport
- Good for phone calls
- Very good for gaming
- Very good for exercise
- Very good for air travel
Key differences
Music
8.3
7.5
The Koss KSC75 is very good for music, while the Sennheiser Momentum Sport is good.
Gaming
6.4
8.8
The Sennheiser Momentum Sport is very good for gaming, while the Koss KSC75 is only fair.
Phone Calls
4.8
7.0
The Sennheiser Momentum Sport is good for phone calls, while the Koss KSC75 is poor.
Noise Reduction
2.5
8.0
The Sennheiser Momentum Sport is very good for noise reduction, while the Koss KSC75 is poor.
Battery
N/A
6.0 Hours
The Koss KSC75 does not have a battery. The Sennheiser Momentum Sport has 6 hours of battery life.
Cost
$20
$330
$0
$100
$200
$300
$400
The Koss KSC75 has a price of $20 and the Sennheiser Momentum Sport costs $330.
Build Quality
5.6
9.0
The Sennheiser Momentum Sport has excellent build quality, while the Koss KSC75 has poor build quality.
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Key similarities
Podcasts and Audiobooks
7.5
7.8
The Sennheiser Momentum Sport and Koss KSC75 are both good for podcasts and audiobooks.
TV and Video
7.7
7.8
The Sennheiser Momentum Sport and Koss KSC75 are both good for TV and video.
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How the Koss KSC75 and the Sennheiser Momentum Sport compare to other earbuds and headphones
Spec Comparison
 |  | |
| Koss KSC75 | Sennheiser Momentum Sport |
GENERAL | |||
|---|---|---|---|
| Price | |||
$20 | $330 | ||
Brand | |||
Brand | Koss | Sennheiser | |
Release Date | |||
Release Date | January 1, 2005 | March 1, 2024 | |
Form Factor | |||
Form Factor | Headphones | Earbuds | |
Connectivity | |||
Connectivity | Wired | Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.3/10 | 7.5/10 | |
Phone Calls Score | |||
Phone Calls Score | 4.9/10 | 7/10 | |
Gaming Score | |||
Gaming Score | 6.5/10 | 8.9/10 | |
TV and Video Score | |||
TV and Video Score | 7.7/10 | 7.8/10 | |
Exercise Score | |||
Exercise Score | 4.3/10 | 8.5/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | N/A | 6 Hours | |
Wireless charging | |||
Wireless charging | N/A | Yes | |
Charging time | |||
Charging time | N/A | 1.5 Hours | |
Bluetooth version | |||
Bluetooth version | N/A | 5.4 | |
Case Battery Life | |||
Case Battery Life | N/A | 24 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | Yes | |
Noise Reduction Score | |||
Noise Reduction Score | 2.5/10 | 8/10 | |
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 | 5.7/10 | 9/10 | |
Comfort score | |||
Comfort score | 7/10 | 7.6/10 | |
Size | |||
Size | N/A | Large | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 45.3 Grams | 6.8 Grams | |
Microphone style | |||
Microphone style | N/A | Integrated | |
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."
Sennheiser Momentum Sport
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Tech Radar
Amelia Schwanke | January 2024
"We hadn't been expecting a new pair of dedicated sports buds but the surprise was nonetheless exciting. I got to try out the new buds at CES 2024 and while they have stayed true to delivering that "signature" Sennheiser sound, with a wide soundstage and strong sense of detail, it’s the extra wearable tech inside them that stands out to me against the best workout headphones."
Get a great deal on the Koss KSC75 or the Sennheiser Momentum Sport
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.
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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Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
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