JBL Quantum 100
Today
Typical price$30
Amazon: the cheapest today among the stores checked
Buy on AmazonJBL Quantum 100 or Sennheiser CX 300S In Ear Headphone?
CX 300S In Ear Headphone costs $1 less today, across the stores checked.
JBL Quantum 100 is the cheaperSennheiser CX 300S In Ear Headphone is $1 the cheaper
The comparison in detail
Sennheiser CX 300S In Ear Headphone
Today
Typical price$29
Amazon: the cheapest today among the stores checked
Buy on AmazonAffiliate links: if you buy, the store pays us a commission at no cost to you.
Both prices over the last 30 days
First data point for one of the two: the chart appears as the days go by.
Still only a few days of data for both to read the trend; the chart fills in as the days go by.
Where is each one cheapest today?
Updated 07/11/2026
Quantum 100
- Amazon Lowest price$30Buy on Amazon
CX 300S In Ear Headphone
- Amazon Lowest price$29Buy on Amazon
Spec sheet side by side
| Item | Quantum 100 | CX 300S In Ear Headphone |
|---|---|---|
| Specs | ||
| Type changes | Gaming | Over-ear |
| General | ||
| Model changes | Quantum 100 | CX 300S In Ear Headphone |
Other comparisons
How we choose
Source: Catalog of partner stores, checked on 07/11/2026.
Lowest price seen for the product in the stores we read, on the day it was read, before sales tax. The model is the brand plus the name of the headphone; the versions go in the table. The price range, the median and the position use only models with a score; the price comparison looks at models whose score is within 0.5 points.
The spec score doesn’t measure how they sound or durability, and the strong or weak point reading is just a comparison of numbers, not a buying recommendation.