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JBL Synchros S300

alaTest has collected and analyzed 27 reviews of JBL Synchros S300. The average rating for this product is 3.7/5, compared to an average rating of 4.0/5 for other Headphones for all reviews. Reviewers are impressed by the comfort and reliability. The durability and usability are also mentioned favorably, whereas the mids quality and size get negative views. There are some mixed reviews about the treble quality and price.

sound, usability, durability, reliability, comfort

size, mids quality

We analyzed user and expert ratings, product age and more factors. Compared to other Headphones the JBL Synchros S300 is awarded an overall alaScore™ of 85/100 = Very good quality.

Review analysis

(Based on 27 reviews)

Expert Reviews  

User Reviews  

Showing 13 review(s)

Expert Reviews User Reviews


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Showing 1 - 11 of 13 Show Reviews: in English | in other languages (2)

Consumer review ( review summary for JBL Synchros S300


alaTest has collected and analyzed 1 user review of JBL Synchros S300 from The average user rating for this product is 4.0/5, compared to an average user rating of 4.0/5 for other Headphones on Views about the reliability and comfort are overall positive. The sound and bass quality also get good feedback. Some have doubts about the size and design. Views are divided on the price.

durability, bass quality, sound, comfort, reliability

design, size

100% of the reviews on give this product a positive rating.

Sep, 2020

Expert review by : (

JBL Synchros S300i Review: Premium Cans for Your iPhone


Works great with Android devices too With so many headphones out in the market today, it's hard to find a product that would suit your taste and your budget, especially when you're looking to upgrade from the sub 5K segment of the market to something a...

Mar, 2014

Consumer review (

For $40 why not?


Caught them on sale for $40 so I figured I'd give them a shot. Great sound quality and they get plenty loud. Although I do not expect them to last forever as I use them in the gym and to run in, so sweat does seep into the ear muffs.


May, 2016

Consumer review (

It works for me!


The product is simple to use and met/exceeded my expectations especially considering the deal.


May, 2016

Consumer review (

Nice presentation but it lacks the sound to back up the price and hype.


These are presented as "premium" headphones, but they just aren't. If you want a better product go with Sennheiser HD 280 Pro Headphones.

Good build quality, nice case, cool colors and feel.

Weak sound, difficult to fit back into case, no 1/4" headphone jack/adapter, and a short cable. Muddy bass sound, no bright highs, mundane mids.

May, 2016

Consumer review (

Great headphones but lack bass


I believe that these are good headphones are overall decent but I paid 25 dollars and definitely wouldn't spend anymore than that on them but if your not a fan of bass then these headphones would be good for you

Overall the construction of these headphones is great with a metal headband and cushion placed on the top makes them easy to have on for a long period of time and the sound on these is incredibly clear

While the headphones have great construction the main problem is the link cable that goes between the headphones and you phone or tablet ect. It's not very long and is easy to get hung or pulled out which is a huge problem because even if it just gets...

May, 2016

Consumer review (

Overall good product


- Tried to use this for VoIP calls on my Desktop computer, but I was near inaudible on the other end. Call quality was crystal clear through them. I know this was not their intended purpose, therefore I cannot place it under pros or cons.

- Sounds great on my Samsung Galaxy S4. - Call quality on my phone is crystal clear with these. - Works fine on my desktop computer when listening to audio. - The price. Bought as a Shell Shocker, so the price for performance is great.

- The in-line control for answering calls, playing music and adjusting audio is manufactured in a rather absurd spot. It ends up falling right between my ear and my chin, which makes adjusting anything inconvenient. - Sounded like a tin can on a string...

May, 2016

Consumer review (

Great Ear Phones


Great clear sound plays perfect for listeners that like classical music and country genre's that don't have alot of bass the construction is great and nothing feels cheap about them with a Jbl steel headband with cushioning

I cannot and will not endorse the bass on these headphones I own a set of Maxwell cheap 20 dollar headphones that push out more 2x the bass these headphones do without any equalization or bass Booster applications I have JBL speakers in my and this is...

May, 2016

Consumer review (

Decent at $40


If you are willing to tweak the sound and find these on sale, they will serve you well, otherwise I would pass on them...

These headphones are quite solid yet very light, and they look good. Carrying case is nice. Sound is good once dialed in. Quite loud on a PC. 15-20% is comfortable and 50% is about all I can take for long.

These are for people with smallish heads. I have them extended as much as they will go and it's not quite enough, so they are a bit snug on top of my head and don't quite feel right on my ears. Without any adjustments, these sound like you have a head...

May, 2016

Consumer review (

Ok Product, Not worth the Price


Superb Built Quality Cushions are great Cord has mic and volume rockers

Sound is just ok, my Philips SHB 4100 and Sennheiser HD202 sounds much better than this. I bought this and then returned because: 1. Headband cushion has some bump 2. I wont Pay $40 for just OK types voice.

May, 2016

Consumer review (

Great product for the price.


Clarity of sound is impressive. The lows and highs are crystal clear.

The ear cuffs are just a little small, but not enough to affect the quality.

May, 2016

Price comparison for JBL Synchros S300

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