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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
Choosing between the Sennheiser CX300S and Momentum True Wireless 3 depends on your priorities. The CX300S are more affordable and deliver good sound quality for their price, but lack the advanced features of the Momentum True Wireless 3, which offer superior sound quality, noise cancellation, and the convenience of truly wireless design. The Momentum True Wireless 3 also supports AptX Adaptive for better audio syncing, which is beneficial if you watch videos or play games. If you want premium features and the best sound, go for the Momentum, but if you’re looking for value and are okay with a wired connection, the CX300S is a solid choice. 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 Sennheiser CX300S
- The Sennheiser CX300S has no clear advantages over the Sennheiser Momentum True Wireless 3.
Advantages of the Sennheiser Momentum True Wireless 3
- Good for music
- Excellent for gaming
- Very good for TV and video
- Very good for air travel
- Very good for podcasts and audiobooks
Key differences
Gaming
6.1
9.0
The Sennheiser Momentum True Wireless 3 is excellent for gaming, while the Sennheiser CX300S is only fair.
Phone Calls
3.0
6.7
The Sennheiser Momentum True Wireless 3 is only fair for phone calls, while the Sennheiser CX300S is poor.
Podcasts and Audiobooks
4.7
8.0
The Sennheiser Momentum True Wireless 3 is very good for podcasts and audiobooks, while the Sennheiser CX300S is poor.
TV and Video
7.3
8.5
The Sennheiser Momentum True Wireless 3 is very good for TV and video, while the Sennheiser CX300S is good.
Noise Reduction
7.0
9.1
The Sennheiser Momentum True Wireless 3 is excellent for noise reduction, while the Sennheiser CX300S is good.
Battery
N/A
7.0 Hours
The Sennheiser CX300S does not have a battery. The Sennheiser Momentum True Wireless 3 has 7 hours of battery life.
Cost
$50
$250
$0
$50
$100
$150
$200
$250
$300
$350
The Sennheiser CX300S has a price of $50 and the Sennheiser Momentum True Wireless 3 costs $250.
Build Quality
8.0
8.9
The Sennheiser Momentum True Wireless 3 and Sennheiser CX300S both have very good build quality, though the Sennheiser Momentum True Wireless 3 has somewhat better build quality.
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Key similarities
Music
6.9
7.3
Although they have very similar scores, PerfectRec considers Sennheiser Momentum True Wireless 3 to be good for music, while the Sennheiser CX300S is only fair.
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How the Sennheiser CX300S and the Sennheiser Momentum True Wireless 3 compare to other earbuds and headphones
Spec Comparison
 |  | |
| Sennheiser CX300S | Sennheiser Momentum True Wireless 3 |
GENERAL | |||
|---|---|---|---|
| Price | |||
$50 | $250 | ||
Brand | |||
Brand | Sennheiser | Sennheiser | |
Release Date | |||
Release Date | February 1, 2019 | May 1, 2022 | |
Form Factor | |||
Form Factor | Earbuds | Earbuds | |
Connectivity | |||
Connectivity | Wired | Wireless | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7/10 | 7.3/10 | |
Phone Calls Score | |||
Phone Calls Score | 3.1/10 | 6.8/10 | |
Gaming Score | |||
Gaming Score | 6.1/10 | 9.1/10 | |
TV and Video Score | |||
TV and Video Score | 7.4/10 | 8.6/10 | |
Exercise Score | |||
Exercise Score | 4.2/10 | 6.6/10 | |
PERFORMANCE | |||
|---|---|---|---|
Battery life | |||
Battery life | N/A | 7 Hours | |
Wireless charging | |||
Wireless charging | N/A | No | |
Charging time | |||
Charging time | N/A | 1.5 Hours | |
Bluetooth version | |||
Bluetooth version | N/A | 5.2 | |
Case Battery Life | |||
Case Battery Life | N/A | 28 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | Yes | |
Noise Reduction Score | |||
Noise Reduction Score | 7/10 | 9.1/10 | |
Virtual Surround | |||
Virtual Surround | No | No | |
Android App | |||
Android App | N/A | Yes | |
iOS App | |||
iOS App | N/A | Yes | |
Mic Quality | |||
Mic Quality | N/A | 8/10 | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 8/10 | 8.9/10 | |
Comfort score | |||
Comfort score | 7.6/10 | 7.6/10 | |
Size | |||
Size | Small | Medium | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 12 Grams | 5.8 Grams | |
Microphone style | |||
Microphone style | N/A | Integrated | |
Shopping
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."
Sennheiser Momentum True Wireless 3
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Dig into reviews and images
Major HiFi
Alex Schiffer | May 2022
"With the Momentum True Wireless 3, Sennheiser cements itself yet again as one of the go-to brands for wireless sound quality. It has a fun and engaging sound signature that has great bass and a great stage, accomplishing what only some of the best Bluetooth earphones can, and that’s clarity."
Get a great deal on the Sennheiser CX300S or the Sennheiser Momentum True Wireless 3
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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