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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
The Bose Quiet Comfort 45 headphones offer a premium listening experience with high comfort and excellent noise isolation, ideal for air travel and casual listening, but they come at a higher price. If sound quality for music and calls is important, the Quiet Comfort 45 will satisfy with their superior build and integrated mic. Sennheiser CX300S earbuds are more affordable, with good sound quality and portability, making them suitable for on-the-go use and very casual audio content like podcasts or TV, but they lack built-in controls and an integrated microphone for calls, which could limit their convenience in comparison. If budget is a key concern, and you primarily use earbuds for passive listening without the need for call capabilities, the Sennheiser CX300S may be sufficient. 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 Quiet Comfort 45
- Very good for phone calls
- Best in class for air travel
- Excellent for podcasts and audiobooks
Advantages of the Sennheiser CX300S
- Good for TV and video
Key differences
Gaming
5.5
6.1
The Sennheiser CX300S is only fair for gaming, while the Bose Quiet Comfort 45 is poor.
Phone Calls
8.0
3.0
The Bose Quiet Comfort 45 is very good for phone calls, while the Sennheiser CX300S is poor.
Podcasts and Audiobooks
9.3
4.7
The Bose Quiet Comfort 45 is excellent for podcasts and audiobooks, while the Sennheiser CX300S is poor.
TV and Video
5.8
7.3
The Sennheiser CX300S is good for TV and video, while the Bose Quiet Comfort 45 is poor.
Noise Reduction
10.0
7.0
The Bose Quiet Comfort 45 is best in class for noise reduction, while the Sennheiser CX300S is good.
Battery
22.5 Hours
N/A
The Bose Quiet Comfort 45 has 22.5 hours of battery life. The Sennheiser CX300S does not have a battery.
Cost
$260
$50
$0
$100
$200
$300
$400
The Bose Quiet Comfort 45 has a price of $260 and the Sennheiser CX300S costs $50.
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Key similarities
Music
6.4
6.9
The Sennheiser CX300S and Bose Quiet Comfort 45 are both only fair for music.
Build Quality
8.5
8.0
The Bose Quiet Comfort 45 and Sennheiser CX300S both have very good build quality.
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How the Bose Quiet Comfort 45 and the Sennheiser CX300S compare to other earbuds and headphones
Spec Comparison
 |  | |
| Bose Quiet Comfort 45 | Sennheiser CX300S |
GENERAL | |||
|---|---|---|---|
| Price | |||
$260 | $50 | ||
Brand | |||
Brand | Bose | Sennheiser | |
Release Date | |||
Release Date | September 1, 2021 | February 1, 2019 | |
Form Factor | |||
Form Factor | Headphones | Earbuds | |
Connectivity | |||
Connectivity | Wired + Wireless | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 6.5/10 | 7/10 | |
Phone Calls Score | |||
Phone Calls Score | 8/10 | 3.1/10 | |
Gaming Score | |||
Gaming Score | 5.6/10 | 6.1/10 | |
TV and Video Score | |||
TV and Video Score | 5.8/10 | 7.4/10 | |
Exercise Score | |||
Exercise Score | 6.4/10 | 4.2/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | 22.5 Hours | N/A | |
Wireless charging | |||
Wireless charging | No | N/A | |
Charging time | |||
Charging time | 3 Hours | N/A | |
Bluetooth version | |||
Bluetooth version | 5.1 | N/A | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | Yes | No | |
Noise Reduction Score | |||
Noise Reduction Score | 10/10 | 7/10 | |
Virtual Surround | |||
Virtual Surround | No | No | |
Android App | |||
Android App | Yes | N/A | |
iOS App | |||
iOS App | Yes | N/A | |
Mic Quality | |||
Mic Quality | 7/10 | N/A | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8.5/10 | 8/10 | |
Comfort score | |||
Comfort score | 10/10 | 7.6/10 | |
Size | |||
Size | N/A | Small | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 235.8 Grams | 12 Grams | |
Microphone style | |||
Microphone style | Integrated | N/A | |
Shopping
Bose Quiet Comfort 45
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Dig into reviews and images
What HiFi?
What HiFi? | November 2022
"If you want a set of wireless over-ear headphones you can put on, deploy noise-cancelling on your commute or at your desk and largely extinguish the outside world for up to 24 hours, the Bose QC 45 has the edge over most of the competition at the price."
Sennheiser CX300S
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Dig into reviews and images
Major HiFi
Carroll Moore | April 2019
"Sennheiser offers impressive bang for your buck when it comes to the CX 300S. Built like a tank and sounding surprisingly good for such a budget-minded earphone, the CX 300S out-classes many of its would-be competitors. Functional but beautiful, it’s the perfect in-ear listening solution for anyone who wants to hear everything and look good doing it."
Get a great deal on the Bose Quiet Comfort 45 or the Sennheiser CX300S
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 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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