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What we think
The PerfectRec Earbuds or Headphones team Learn more
Updated January 10, 2024·
If you seek an affordable option, the JBL Quantum 100 headphones are significantly less expensive than the Sennheiser CX300S earbuds and are better for gaming due to their high score in that area and inclusion of a boom microphone. However, if you prioritize portability and noise isolation for environments like commuting or air travel, the Sennheiser CX300S, being earbuds, excel in these aspects. For comfort and long listening sessions, the Sennheiser has a higher comfort score. Neither offer wireless connectivity. Consider the Sennheiser for better build quality and sound isolation, whereas the JBL Quantum 100 may be more suitable for gaming and budget-conscious shoppers. 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 JBL Quantum 100
- Good for music
- Very good for gaming
Advantages of the Sennheiser CX300S
- Good for air travel
Key differences
Gaming
8.5
6.1
The JBL Quantum 100 is very good for gaming, while the Sennheiser CX300S is only fair.
Phone Calls
5.5
3.0
The JBL Quantum 100 and Sennheiser CX300S are both poor for phone calls, though the JBL Quantum 100 is somewhat better.
Noise Reduction
5.3
7.0
The Sennheiser CX300S is good for noise reduction, while the JBL Quantum 100 is poor.
Cost
$40
$50
$0
$10
$20
$30
$40
$50
The JBL Quantum 100 has a price of $40 and the Sennheiser CX300S costs $50.
Build Quality
6.5
8.0
The Sennheiser CX300S has very good build quality, while the JBL Quantum 100 has only fair build quality.
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Key similarities
Music
7.0
6.9
Although they have very similar scores, PerfectRec considers JBL Quantum 100 to be good for music, while the Sennheiser CX300S is only fair.
Podcasts and Audiobooks
4.5
4.7
The Sennheiser CX300S and JBL Quantum 100 are both poor for podcasts and audiobooks.
TV and Video
7.1
7.3
The Sennheiser CX300S and JBL Quantum 100 are both good for TV and video.
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How the JBL Quantum 100 and the Sennheiser CX300S compare to other earbuds and headphones
Spec Comparison
 |  | |
| JBL Quantum 100 | Sennheiser CX300S |
GENERAL | |||
|---|---|---|---|
| Price | |||
$40 | $50 | ||
Brand | |||
Brand | JBL | Sennheiser | |
Release Date | |||
Release Date | May 1, 2020 | February 1, 2019 | |
Form Factor | |||
Form Factor | Headphones | Earbuds | |
Connectivity | |||
Connectivity | Wired | Wired | |
SOUND | |||
|---|---|---|---|
Music Score | |||
Music Score | 7/10 | 7/10 | |
Phone Calls Score | |||
Phone Calls Score | 5.5/10 | 3.1/10 | |
Gaming Score | |||
Gaming Score | 8.6/10 | 6.1/10 | |
TV and Video Score | |||
TV and Video Score | 7.2/10 | 7.4/10 | |
Exercise Score | |||
Exercise Score | 4/10 | 4.2/10 | |
FEATURES | |||
|---|---|---|---|
Active Noise Cancelling | |||
Active Noise Cancelling | No | No | |
Noise Reduction Score | |||
Noise Reduction Score | 5.3/10 | 7/10 | |
Virtual Surround | |||
Virtual Surround | No | No | |
Mic Quality | |||
Mic Quality | 10/10 | N/A | |
BUILD AND DESIGN | |||
|---|---|---|---|
Build Quality | |||
Build Quality | 6.5/10 | 8/10 | |
Comfort score | |||
Comfort score | 6/10 | 7.6/10 | |
Size | |||
Size | N/A | Small | |
Weight (headset or single earbud) | |||
Weight (headset or single earbud) | 220 Grams | 12 Grams | |
Microphone style | |||
Microphone style | Boom | N/A | |
Shopping
JBL Quantum 100
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Dig into reviews and images
CNN Underscored
Wes Davis | July 2023
"I appreciate a functional piece of tech as much as I do gear on the bleeding edge, and the JBL Quantum 100 certainly falls in the former category. The sound is reasonably good, the built-in microphone is surprisingly reliable and it has a thoughtful design for the price. It lacks the convenience of Bluetooth, sure, but sometimes it’s nice not to have to worry about the finicky nature of wireless communication and go with good old hard-wired tech."
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 JBL Quantum 100 or the Sennheiser CX300S
About JBL
JBL is an American audio equipment manufacturer. Owned by Harman International which is, itself, owned by Samsung Electronics. JBL markets a wide array of monitoring speakers, professional headphones and consumer market headphones and earbuds. It was founded in 1946 by James Bullough Lansing (whose initials give the company its name) and has become one of the most prolific audio companies ever. Their products were responsible for audio during the 1969 Woodstock Festival.
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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Why trust us
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
Joe Golden, Ph.D
CEO and Earbuds and Headphones Editor
Joe is an entrepreneur and lifelong electronics enthusiast with a Ph.D in Economics from the University of Michigan.
Jason Lew
Staff Expert & Software Engineer
Jason is a staff expert and software engineer that has been making laptop recommendations for 7 years and moderates one of the largest laptop subreddits.
Chandradeep Chowdhury
Staff Expert & Software Engineer
Chandradeep is a staff expert and software engineer and expert in televisions and monitors. He’s been making monitor recommendations for ten years.
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Earbuds and Headphones Expert
Luis is a Mexico-based headphones expert. He’s been making headphone recommendations for five years and has close to 100 pairs in his personal collection.
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