JBL Authentics 300
Amazon: the cheapest today among the stores checked
Buy on AmazonUpdated Nov 7, 2026
Xtreme 3 costs $30 less today, across the stores checked.
JBL Authentics 300 is the cheaperJBL Xtreme 3 is $30 the cheaper
Amazon: the cheapest today among the stores checked
Buy on AmazonAmazon: 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.
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.
Updated 07/11/2026
| Item | Authentics 300 | Xtreme 3 |
|---|---|---|
| Specs | ||
| Type | Portable | Portable |
| Power changes | 100 W | not listed |
| Waterproof changes | not listed | Yes |
| General | ||
| Model changes | Authentics 300 | Xtreme 3 |
Authentics 300 orJBL Authentics 300 Portable Smart Speaker$300Compare
Xtreme 3 orJBL Flip 7 Waterproof Portable Speaker Bundle$238Compare
Authentics 300 orMarshall Acton III Bluetooth Home Speaker$300Compare
Xtreme 3 orJyx 500W Peak Rolling Karaoke Machine$250Compare
Authentics 300 orSoundcore Rave 3S AI Party Speaker by Anker$300Compare
Xtreme 3 orTribit StormBox Blast 2 Bluetooth Speaker$280CompareSource: 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 Bluetooth speaker; 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 it sounds or real battery life or durability, and the strong or weak point reading is just a comparison of numbers, not a buying recommendation.