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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
If you prioritize noise cancellation and wireless convenience for versatile use, such as exercise or air travel, the Bose QuietComfort Earbuds II are a great choice; they also have customizable controls, an app equalizer, and a comfortable fit, but at a higher cost. On the other hand, the Koss KSC75, being more affordable, offer impressive sound quality and they're wired with a clip-on design, suitable for home listening; however, they lack features like active noise cancelling, wireless connectivity, and an in-built microphone, which could limit their use in noisy environments or for calls. 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 Bose QuietComfort Earbuds II
- Very good for exercise
- Very good for air travel
Advantages of the Koss KSC75
- Very good for music
- Good for TV and video
- Good for podcasts and audiobooks
Key differences
Music
7.4
8.3
The Koss KSC75 is very good for music, while the Bose QuietComfort Earbuds II is good.
Gaming
5.5
6.4
The Koss KSC75 is only fair for gaming, while the Bose QuietComfort Earbuds II is poor.
Podcasts and Audiobooks
6.0
7.5
The Koss KSC75 is good for podcasts and audiobooks, while the Bose QuietComfort Earbuds II is only fair.
TV and Video
6.2
7.7
The Koss KSC75 is good for TV and video, while the Bose QuietComfort Earbuds II is only fair.
Noise Reduction
9.1
2.5
The Bose QuietComfort Earbuds II is excellent for noise reduction, while the Koss KSC75 is poor.
Battery
7.0 Hours
N/A
The Bose QuietComfort Earbuds II has 7 hours of battery life. The Koss KSC75 does not have a battery.
Cost
$199
$20
$0
$50
$100
$150
$200
$250
$300
The Bose QuietComfort Earbuds II has a price of $199 and the Koss KSC75 costs $20.
Build Quality
9.2
5.6
The Bose QuietComfort Earbuds II has excellent build quality, while the Koss KSC75 has poor build quality.
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Key similarities
Phone Calls
5.1
4.8
The Bose QuietComfort Earbuds II and Koss KSC75 are both poor for phone calls.
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How the Bose QuietComfort Earbuds II and the Koss KSC75 compare to other earbuds and headphones
Spec Comparison
 |  | |
| Bose QuietComfort Earbuds II | Koss KSC75 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$199 | $20 | ||
Brand | |||
Brand | Bose | Koss | |
Release Date | |||
Release Date | September 1, 2022 | January 1, 2005 | |
Form Factor | |||
Form Factor | Earbuds | Headphones | |
Connectivity | |||
Connectivity | Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7.4/10 | 8.3/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.2/10 | 4.9/10 | |
Gaming Score | |||
Gaming Score | 5.6/10 | 6.5/10 | |
TV and Video Score | |||
TV and Video Score | 6.3/10 | 7.7/10 | |
Exercise Score | |||
Exercise Score | 8.5/10 | 4.3/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 7 Hours | N/A | |
Wireless charging | |||
Wireless charging | No | N/A | |
Charging time | |||
Charging time | 2 Hours | N/A | |
Bluetooth version | |||
Bluetooth version | 5.3 | N/A | |
Case Battery Life | |||
Case Battery Life | 20 | N/A | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | Yes | No | |
Noise Reduction Score | |||
Noise Reduction Score | 9.1/10 | 2.5/10 | |
Virtual Surround | |||
Virtual Surround | Yes | N/A | |
Android App | |||
Android App | Yes | N/A | |
iOS App | |||
iOS App | Yes | N/A | |
Mic Quality | |||
Mic Quality | 6.5/10 | N/A | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 9.2/10 | 5.7/10 | |
Comfort score | |||
Comfort score | 8.6/10 | 7/10 | |
Size | |||
Size | Medium | N/A | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 7.7 Grams | 45.3 Grams | |
Microphone style | |||
Microphone style | Integrated | N/A | |
Shopping
Bose QuietComfort Earbuds II
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Dig into reviews and images
What HiFi?
What HiFi? | September 2023
"Bose’s flagship wireless earbuds were never going to be cheap, but the question was whether they’d be competitive in an area of the market where rivals have never been more capable. The fact that the company has not only managed to implement a successful redesign, but also push the envelope for noise-cancelling and sound quality in such a highly competitive category simultaneously is truly impressive."
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."
Get a great deal on the Bose QuietComfort Earbuds II or the Koss KSC75
About Bose
Bose is an American audio equipment manufacturer based out of Framingham, Massachusetts. Founded in 1964 by Amar Bose with the goal of creating a speaker system that could accurately recreate the sound of a concert hall, Bose has become one of the most prominent players in the modern consumer audio market due to the premium feel of their products and their wide brand recognition.
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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