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alaScore 91

51 reviews

Aug, 2015

alaTest has collected and analyzed 51 reviews of JBL E40 BT. The average rating for this product is 3.9/5, compared to an average rating of 4.0/5 for other Headphones for all reviews. People are impressed by the size and reliability. The design and usability are also mentioned favorably, but there are mixed reviews on the comfort and durability.

sound, usability, design, reliability, size

We analyzed user and expert ratings, product age and more factors. Compared to other Headphones the JBL E40 BT is awarded an overall alaScore™ of 91/100 = Excellent quality.

Review analysis

(Based on 51 reviews)

Expert Reviews  

User Reviews  

Showing 7 review(s)

Expert Reviews User Reviews
Showing 1 - 7 of 7 Show Reviews: in English | in other languages (46)

Consumer review by: ( review summary for JBL E40 BT


alaTest has collected and analyzed 3 user reviews of JBL E40 BT from The average user rating for this product is 2.7/5, compared to an average user rating of 3.9/5 for other Headphones on Reviewers are impressed by the design and price. The usability and sound are also mentioned favorably. Reviews are divided on the comfort, while the reliability and durability get critical reviews.

sound, usability, price, design

durability, reliability

33% of the reviews on give this product a positive rating.

This summary is based on the product: JBL Synchros E40BT On Ear Headphone - Black

Aug, 2015

Expert review by: Jordan Anderson (

Review: JBL Synchros E40BT headphones


Balanced sound, cleaver controls make wearing on-ear headphones enjoyable

Bluetooth range ; Control system ; Sound quality

Flimsy construction ; Headband adjustment ; Uncomfortable after two hours

For all the different configurations of headphones on the market, it's always a tough choice for buyers to get something that is just right. For consumers searching for a strong sound but who don't want to shell out a couple hundred dollars on over-t

Jul, 2014

Expert review by: Andrew Hayward (

JBL Synchros E40BT review


JBL's lower-end foray into Bluetooth headphones delivers stellar results

Great sound for the price ; Long battery life ; Stylish color schemes ; ShareMe function

Snug against the ears ; Flimsy build ; Aggressive branding

Affordable without sacrificing too much quality, the JBL Synchros E40BT delivers quality Bluetooth sound and reliable battery life.

Sep, 2014

Consumer review by: Grasshop (

Great pair of headphones


These are great, bluetooth was super easy to setup, and the media controls on the headphones are really handy. It's great to play/pause, skip or previous track without having to dig out your phone from your pocket. I'm not a hardcore audiophile so I...

May, 2015

Consumer review by: leroy47 (

very good headphones


The headphones were a Christmas gift. I have had for almost 3 months and they are excellent. The audio response is as good or better than any ot the wired headphones I own. The bluetooth range is pretty good - I can walk almost anywhere in the house...

Mar, 2015

Product Specifications


Display: No
Microphone Boom Arm: No
Multi Compatible Gaming Function: No
Mute Control: No
Sound System:STEREO
Volume Control: Yes


Bluetooth: Yes
Connection:ONE 3.5 mm Plug
USB Dongle: No

General Features

Compatibility:for 4 and more brands