Synchros S700 Refurbished


Powered Over-ear stereo headphone

$244.99244.99 each $349.95 Save $105

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Powered Over-ear stereo headphone

The sound of what comes next. For decades, JBL sound systems have stunned audiences worldwide with their powerful, professional audio sound. Now, introducing a no-holds-barred headphone from JBL that delivers the same energy of JBL professional audio in a cutting-edge framework designed for maximum comfort and performance. Precision crafted from lightweight die cast aluminum, woven cordura, steel and leather, the S700 is a departure from conventional plastic headphones. Modeled after industry leading JBL professional audio systems, these headphones deliver balanced audio with cutting-edge clarity, and original JBL PureBass performance. Enhanced by proprietary LiveStage™ signal processing, the S700 delivers a more lifelike listening experience like no other headphone today. The detachable cable design enables compatibility with either iOS or Android devices, while a built-in rechargeable Li-ion battery empowers you to enjoy 28 hours of LiveStage technology straight without any skimping on sound quality. Hear – and see – the truth for yourself: the JBL Synchros S700 is the calling card for the next era in audio design.


General Specifications

Type Over-Ear Headphones.
Rated Power Input 30mW

Audio Specifications

Frequency Response 10Hz – 22kHz
Maximum SPL 117dB @ 30mW

Speaker Specifications

Driver 50mm driver


Height (in) 7-2/23
Height (mm) 180
Width (in) 5-9/10
Width (mm) 150
Depth (in) 3-25/32
Depth (mm) 96

Control and Connection Specifications

Connector 3.5mm jack
  • Carrying case
  • 1 cable for USB charging
  • 1 pair of JBL S700 over-ear stereo headphones with Li-ion Battery1 three button iOS remote/microphone cable and 1 three button universal remote/microphone cable1 cable for USB chargingCarrying caseQuick-start guide
  • Quick-start guide
  • 1 three button iOS remote/microphone cable and 1 three button universal remote/microphone cable

Manuals & Downloads

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

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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 eligible for exchange.

Call us: 1.800.336.4525

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Synchros S700 is rated 4.8 out of 5 by 22.
Rated 5 out of 5 by from the main headphones for real. this is an all in one headphone I own the E-1O S100, S200, bassline, synchros wireless, synchros slate 500 and this one the S700 they all beautiful sond but this one is the mega of all I love the sound because is 117 DB you don't need much of volume on your phone plus you hear in all and this one details on your music, bass is clean punchy, deep no distortion nice soundstage dynamic and clean in all music I hear and looks so cool everybody love it I use it for hours and seriously he's in the league of headphones costing more seriously alla of then I buy it in Amazon they all black but the bassline is red,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,I recommend it.
Date published: 2017-01-23
Rated 5 out of 5 by from Best Build Quality and Ideal Driver Size The 50mm drivers in these headphones are my new standard. It delivers the bass I need to hear for modern music. The build is awesome! I really hope JBL keeps expands on this flagship product and gives it the necessary attention/exposure.
Date published: 2016-06-13
Rated 5 out of 5 by from Amazing Headphones! Recently got these headphones as a replacement for my S500's and they sound fantastic! Although they are nice, I do have 2 complaints... Number 1: The headband is a tiny bit smaller than the S500's headband, so I have to pull the band down to the 2nd notch. Other than this I think the build quality is superb! My number 2: The Livestage DSP really doesn't make much a difference in the audio. On my S500's I noticed it way more, but it does work and all, but would have preferred it to be more noticeable. Overall I am really happy with the headphones despite my 2 setbacks. I definitely think this is a good pair of headphones for audio files, music producers, and even your techy person in your life. Owning these headphones I get asked, "What are those?" Many people ask to listen to them and get blown away. Totally recommend these headphones!
Date published: 2016-04-26
Rated 5 out of 5 by from Stall happy after all these years ... Bought these when they first came out ... and remain very pleased. I run them through a small Bravo Audio tube amplified for added impact. Could not be happier.
Date published: 2016-03-11
Rated 5 out of 5 by from Awesome headphones! I've had these for about two years now. Got em when they first came out and I still love them. Great sound for both passive mode and Live DSP. Keep up the good work, JBL.
Date published: 2016-02-06
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How long is the cord?

Asked by: snickers
is this bluetooth? what can I do to use with my iphone 7?
Answered by: Fila
Date published: 2017-11-18

How can I change my earcups on my s700 please help me since my ear cups are shredded . & where can I get them.

Asked by: Chris64
I can see that you have already assisted by our Customer Service team. I'm glad that it has been taken care of.
Answered by: Joe G at Customer Service
Date published: 2018-09-15

Hello, What is the impedance of headphones JBL Synchros s700 please ..?

Asked by: mosquito69
The S700 has an active and a passive mode. As a purely passive headphone, it has a 32 Ohm impedance. In active mode, it is a high-impedance load, around 2.2 kOhm. This is because the source no longer looks into the speaker drive units in active mode, but looks into an amplifier, which does not place any load on the source, needing little energy.
Answered by: Joe G at Customer Service
Date published: 2018-09-08

I live in a small flat and can hear my neighbours music which interferes with my listening to my television or my own music.  I have some Bose headphones but they have to be attached with a plug to the device but I want headphones for my tv no wires.

Asked by: Frances
Hello, your tv cannot connect wirelessly to the S700 headphone. You would need a usb dongle or similar solution for bluetooth connectivity. BR Rob
Answered by: Rob1
Date published: 2017-12-02

Are these headphones noise cancelling 

Asked by: Jasonblahblah
The SYNCHROS S700 is not a noise cancelling headphone.
Answered by: Joe G at Customer Service
Date published: 2017-12-02

Other than the cosmetic chrome appearance, what is the difference in the synchros 700 headphones and the Synchros Chrome Edition

Asked by: Chzynachoslayer
The Synchros Chrome is not a wireless headphone as opposed to the Everest 700 which you have the option of wireless or can also use an audio aux cord. The Synchros Chrome features AAA batteries which allows you to have up to 20 hours of LiveStage technology which is a digital signal processing that enhances headphone audio to recreate the experience of listening to a live performance. The Everest 700 features the ShareMe 2.0 which allows you to connect to Bluetooth headphones and share music. The Chrome features a 50 mm driver as opposed to the Everest which features the 40 mm driver. Both headphones have a frequency response of 10Hz-22kHz.
Answered by: Karissa
Date published: 2018-03-28

I've noticed that they sound slightly hollow unless I press the buttons on the cable. Holding any/all of them down results in a much richer, roomier sound. I'm guessing that there might be a problem with the cable. Anyone else experience this?

Asked by: Joe1912
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