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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
If you're looking for wireless convenience and better sound isolation, the Sennheiser HD 250BT would be preferable. They also offer a higher build quality, integrated mic for clear calls, and longer battery life, which make them suitable for various activities, including gaming due to their low latency. However, if you prioritize an open-back experience with a wider soundstage and are okay with a wired connection, the Koss KSC75 could be a better, more cost-effective option for you. They are also lighter, which might be more comfortable for long listening sessions; but keep in mind that they won't isolate sound as well as the Sennheisers. 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 HD 250BT
- Good for phone calls
- Very good for gaming
- Very good for TV and video
- Very good for air travel
- Very good for podcasts and audiobooks
Key differences
Music
8.3
6.5
The Koss KSC75 is very good for music, while the Sennheiser HD 250BT is only fair.
Gaming
6.4
8.8
The Sennheiser HD 250BT is very good for gaming, while the Koss KSC75 is only fair.
Phone Calls
4.8
7.2
The Sennheiser HD 250BT is good for phone calls, while the Koss KSC75 is poor.
Podcasts and Audiobooks
7.5
8.1
The Sennheiser HD 250BT is very good for podcasts and audiobooks, while the Koss KSC75 is good.
TV and Video
7.7
8.4
The Sennheiser HD 250BT is very good for TV and video, while the Koss KSC75 is good.
Noise Reduction
2.5
6.0
The Sennheiser HD 250BT is only fair for noise reduction, while the Koss KSC75 is poor.
Battery
N/A
25.0 Hours
The Koss KSC75 does not have a battery. The Sennheiser HD 250BT has 25 hours of battery life.
Cost
$20
$65
$0
$20
$40
$60
$80
$100
The Koss KSC75 has a price of $20 and the Sennheiser HD 250BT costs $65.
Build Quality
5.6
9.0
The Sennheiser HD 250BT has excellent build quality, while the Koss KSC75 has poor build quality.
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How the Koss KSC75 and the Sennheiser HD 250BT compare to other earbuds and headphones
Spec Comparison
 |  | |
| Koss KSC75 | Sennheiser HD 250BT |
GENERAL | |||
|---|---|---|---|
| Price | |||
$20 | $65 | ||
Brand | |||
Brand | Koss | Sennheiser | |
Release Date | |||
Release Date | January 1, 2005 | May 1, 2021 | |
Form Factor | |||
Form Factor | Headphones | Headphones | |
Connectivity | |||
Connectivity | Wired | Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 8.3/10 | 6.6/10 | |
Phone Calls Score | |||
Phone Calls Score | 4.9/10 | 7.2/10 | |
Gaming Score | |||
Gaming Score | 6.5/10 | 8.9/10 | |
TV and Video Score | |||
TV and Video Score | 7.7/10 | 8.5/10 | |
Exercise Score | |||
Exercise Score | 4.3/10 | 6.2/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | N/A | 25 Hours | |
Wireless charging | |||
Wireless charging | N/A | No | |
Charging time | |||
Charging time | N/A | 3 Hours | |
Bluetooth version | |||
Bluetooth version | N/A | 5 | |
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 | |
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 | 7/10 | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 45.3 Grams | 125 Grams | |
Microphone style | |||
Microphone style | N/A | Integrated | |
Waterproof Rating | |||
Waterproof Rating | 0 | 0 | |
Shopping
Koss KSC75
See more
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 HD 250BT
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Dig into reviews and images
Headphone Check
Pete Scholßnagel | 2020
"As a lightweight, robust audio provider with a long battery life, the Sennheiser HD 250BT offer a lot for their price: very good Bluetooth codecs, an app connection and an extremely understated design. These headphones may not be among the most comfortable, but they deliver adequate sound – without overdriving or distortion."
Get a great deal on the Koss KSC75 or the Sennheiser HD 250BT
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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About the Earbuds or Headphones team
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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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