• Award Winner

Synchros S300a


Synchros on-ear stereo headphones
$134.95 each $149.95


Enjoy 10% off!

Product Actions

Add to cart options

In stock and ready to ship


Now you can have your sonic revolution and carry it easily too. The new JBL Synchros S300 breaks from traditional headphone design. Lightweight, yet durable, with a steel headband and leather ear cushions, the S300 is comfortable for hours of listening. Modeled after the same JBL sound systems used in the world’s most prestigious clubs, the S300 delivers a balanced audio experience with amazing clarity and deep, powerful bass. The earcups rotate and fold in for simple, compact storage. Available in 4 colors, the S300 is compatible with both iOS and other Smartphones.

What's in the box?

  • 1 pair JBL S300 on-ear stereo headphones
  • 1 three-button iOS remote/microphone cable or 1 three-button universal
  • remote/microphone cable
  • Carry Case
  • Quick-start guide

Shop all Over-Ear & On-Ear Headphones

Not finding what you're looking for?

Shop all Over-Ear & On-Ear Headphones

We meant it when we said we’d build a revolutionary line of stylish headphones. For those who know authentic elegance when they see it and hear it – meet our new JBL S300 Headphone. Its precision boldness and rugged good looks come fused together by a steel headband that’s both lightweight and durable. Its premium leather ear cushions provide your ears with more than just perfect listening. For the fearless interloper within us all, the JBL S300 demands seeing - as much as hearing – to be believed. Score another instant JBL classic.

It’s no trade secret we’ve created the world’s most legendary loudspeakers. Artists from the Beatles to Maroon 5 have used JBL equipment to create some of their most historic recordings. So it should come as no surprise we’ve taken Pro-Audio sound to new highs – and depths – of power and portability in our Synchros Series. Introducing JBL Professional Audio Sound with PureBass performance. One listen to our S300 – and the phrase “clarity of sound” will never sound the same. PureBass performance is much more than a tag-line, it’s a philosophy. Focusing on the full audio spectrum, not just the low end, the headphones deliver a balanced audio experience with amazing clarity, and deep powerful bass; producing clear separation of notes, avoiding the boominess and muddy sound found in other popular headphones.

When it comes to convenience, the perfect pair of headphones should satisfy in all departments – whether in wearing them out on the town or in storing them at home. The S300 headphones incorporate fold-up, 3-D flexibility into their design that lets you fold them, collapse them, and store them neatly away – ready for whatever adventure befalls you.

On-the-go compatibility with an iPhone or other popular smartphone isn’t just a nicety these days in a premium headphone – it’s what you need. The JBL S300 is built with that principle in mind, coming in two possible configurations: one using an Apple 3-button mic/remote cable and one using a universal 3-button mic/remote cable to keep you’re listening fun and flexible. Either option synchs easily with your S300, allowing you the freedom to enjoy your music or easily take calls without missing a beat

Rated Input Power
Frequency Response
10Hz – 22kHz
Maximum SPL
115dB @ 30mW
Premium 40mm

The latest owner's manuals, quick start guides, and documents.

Call us: 1.800.336.4525

  • Sales and pre-sale assistance
  • Technical help
  • Parts and accessories


Synchros S300a is rated 4.3333 out of 5 by 3.
Rated 5 out of 5 by from Very nice sound I have listened to all types of music on these earphones -- from rock to bluegrass to classical and am very pleased with the sound. I have another pair of good earphones and several pair of highend earbuds, but prefer these JBL's over them all. The on-ear fit and comfort is very nice, and they can be used for several hours of continuous listening withing discomfort.
Date published: 2014-12-10
Rated 4 out of 5 by from great im not an expert, but the sound is very good balance, with good bass and nids and highs,in a symphony balance. i like how it folds many ways,and the remote buttons function very nice, and much variation. ...yes the cord is alittle too short. I feel its pretty good and strong for the price. joey
Date published: 2014-09-08
Rated 4 out of 5 by from Sounds beautiful Love the sound, but the L shape audio input wire AND VOLUME is NOT COMPATIBLE WITH THE iphone outer box. No volume control. Other wise a beautiful sound. Audio input jack doesn't fit. The cord skittle bit too short
Date published: 2014-05-14
  • 2015-11-27T07:04CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.6
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_3
  • loc_en_US, sid_synchro300, PRD, sort_positive
  • clientName_JBL

Store Locator

25% Off\n \n\n \n JBL Synchros S300A On-Ear PureBass Headphones with Universal 3-Button Remote/Mic, 10Hz - 22kHz Frequency, 115dB at 30mW Sensitivity, Black/Blue
In Stock
JBL Synchros S300 Premium On-Ear Stereo Headphones with Apple 3-Button Remote, Black/Blue
In Stock
Best Buy
JBL - Synchros S300a On-Ear Headphones - Black/Blue
In Stock
JBL Synchros S300a
In Stock
Sonic Electronix
JBL S300A Black/Blue + Sonic Electronix Bonus Pack 3 + Sonic Electronix Bonus Pack 3
In Stock

Find a Store Near You

The Store Locator is designed to help you find the closest store near you.

Click a store in the list or on the map to view details.