• Award Winner
Item# S400BTBLK

Synchros S400BT


JBL stereo heapdhones with Bluetooth 3.0 wireless freedom


$229.95 each


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You can’t press pause on a pro-audio revolution – certainly not when JBL engineers are at the helm. Introducing the new JBL S400BT. As the latest addition to the JBL Synchros line of premium headphones, the award-winning S400BT adds the freedom of Bluetooth 3.0 wireless to the performance of a Synchros headphone. Using advanced aptX digital encoding technology that streams high-resolution audio on par with any wired Synchro headphone, the S400BT is fine-tuned on the inside to maximize enjoyment on the outside. Take the headphone’s hassle-free single touch sensor for instance: all you need to do is swipe your finger anywhere along the S400BT’s left outer earcup, and you can seamlessly adjust your headphone’s volume, track-changes, and call settings, since the entire earcup functions as a single, touch-sensitive control system. The right outer earcup boosts user flexibility as well, coming with an NFC sensor that pairs your headphone to any NFC-enabled device. Just give the right earcup a single tap, and you’re instantly connected. With this level of intuitive technology at play, it’s hard not to notice how the S400BT simplifies like never before. Others will definitely take notice: a built-in LED lighting system trails the touch of your hand in reaction to each adjustment made to your headphone’s settings. Now you can showcase your listening experience at the speed of light. Viewed as a whole, the S400BT is a wireless headphone that’s meant to celebrate - as much as to simplify – premium listening. Chances are you’ve never witnessed a headphone that comes even close to this.

What's in the box?

  • 1 pair JBL S400BT wireless on-ear Bluetooth® stereo headphone
  • 1 USB charging cable
  • 1 3.5 mm audio cable
  • Carry Case
  • Quick-start guide

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Manuals & Downloads

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

Device Compatibility


General Specifications

Rated Power Input
Battery Type
Lithium polymer (3.7V, 610mAh)
Music Playing Time
15 hours
Talk Time
20 hours

Audio Specifications

Frequency Response
10Hz – 22kHz
Maximum SPL
115dB @ 30mW

Speaker Specifications

Premium 40mm drivers

Control and Connection Specifications

Bluetooth Transmitter Frequency Range
2.402~2.480 GHz
Bluetooth Transmitter Power
Bluetooth Transmitter Modulation
Supported Bluetooth Profiles
3.0, AD2P v1.2, AVRCP v1.4, HFP v1.6, HSP v1.2
Microphone Sensitivity
-42dBV/Pa @1KHz


JBL Professional Audio Sound with PureBass Performance and aptX encoding.

Sound modeled after industry leading JBL professional audio speakers delivers a balanced audio experience with amazing clarity and deep powerful bass, while advanced aptX encoding lets you experience the highest possible wireless sound quality available.

Bluetooth® 3.0 wireless freedom with innovative touch sensor controls and NFC technology simplify the user experience.

Wireless technology liberates you from the hassles of wires, while NFC technology on the right outer earcup simplifies the Bluetooth pairing process. The innovative touch sensor controls on the left earcup enable you to advance tracks, adjust volume, and play or pause your music, as well as take your calls – all with an easy swipe of your finger anywhere along the earcup’s surface.

Unique LED Lighting Feature

A unique LED lighting feature responds intuitively to every adjustment made to your headphones’ touch sensor control system, following the direction that you swipe your finger across the earcup.

Warranty 1 Year

Products purchased online or from an authorized local retailer and under warranty may qualify for an exchange with a valid receipt.

Purchases made from an unauthorized dealer will not be elibible for exchange.

Request an Exchange

Product Support

Call us: 1.800.336.4525

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


Synchros S400BT is rated 4.625 out of 5 by 24.
Rated 5 out of 5 by from Absolutely Amazing Bought this last week, couldn't be more happy with them. The swipe feature and LED patterns get so much attention its ridiculous. They noise cancelling on these headphones is phenomenal. They sound better than my friends $400 Bose nosie canceling over-ears.
Date published: 2015-10-07
Rated 5 out of 5 by from Great Sound! Awsome product Excellent sound for musics and phone calls. Its just perfect!
Date published: 2015-01-30
Rated 5 out of 5 by from good sound and comfort purchased for my kids for Christmas gifts they love them
Date published: 2015-01-03
Rated 5 out of 5 by from great value and great sound and a very good value.
Date published: 2014-12-31
Rated 5 out of 5 by from Great headphones with Cons that can be lived with. Into second week with these headphones. These are great headphones. Sound is awesome. Any kind of music you will enjoy for sure. When the volume is high, you can see the headphones responding so well that you can feel the music.. Cons of the headset: 1) While the touch control is innovative it becomes both the strength and weakness. you need to get used to the panel and the its the best headset out there. 2) Music leak from the headphone: On high volumes the music gets leaked which is obvious for most of the headphones but the best point is, at that high volume also the headphones sound so great. Happy for the purchase!!
Date published: 2014-12-23
Rated 5 out of 5 by from great sound! Great bass and clarity is awsome.great for phone calls too.
Date published: 2014-12-16
Rated 5 out of 5 by from The best sounding bluetooth headphones! Period!6⭐️ Natural sounding drivers, excellent sound quality & impressive design!
Date published: 2014-12-14
Rated 5 out of 5 by from Perfect for clean personal listening Saw a friend with same,when I heard the quality of the music from these head phones,I fell in love with them.
Date published: 2014-12-13
  • 2015-10-09T07:23CST
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