Name: Synchros S400BT
Brand: JBL
SKU: 12761
Rating: 4.2 (38 reviews)

4.0

based on all reviews

The whole design feels smooth and polished in your hands
They fold up nicely
and fit in a relatively small case

snare hits could be a bit too much at higher volumes
the internal microphone is not the best when making phone calls
proprietary charging cable

Frequency range: 20, 20000 Hz
Acoustic design: Closed
Sound output: Stereo
Style: On-Ear, On-Ear
Connectivity technology: Wired & Wireless

JBL Synchros S400BT - Pros & Cons

The whole design feels smooth and polished in your hands
They fold up nicely
and fit in a relatively small case
a beautiful mess of materials that somehow comes together well
design yields durability and comfort
Sound performance is good
The NFC capability and connection was flawless
The comfort in the feel and the sound seamlessly blend
clear and concise quality
Exceptionally comfortable
even over long listening sessions
Powerful
distortion-free audio performance with intense bass response
delivers absolutely thunderous bass in a comfortable design

snare hits could be a bit too much at higher volumes
the internal microphone is not the best when making phone calls
proprietary charging cable
touch pad is weirdly sensitive
The bass is also loud in the mix
S400BT requires a proprietary USB cable
its charging port might be hidden
no in-line mic or control on the cable though
much of a drop from cordless to attached headphones

JBL Synchros S400BT - Technical Overview

	Poor	Average	Good	Excellent
Driver size	40 mm Best: Hauppauge XFones Driver size: 400 mm
Weight	275 g Best: Cyber Acoustics ACM-7002 Weight: 0.11 g

JBL - Video Reviews (7)

JBL Synchros S400BT Wireless On-Ear Bluetooth Stereo Headphone Review JBLaudio

JBL Synchros S400BT - Full Specifications

Sound output	Stereo
Style	On-Ear On-Ear
Connectivity technology	Wired & Wireless
Headset (integrated/enclosed microphone)	yes

Width	5.75 in
Depth	3.03 in
Height	7.48 in
Weight	9.7 oz

Inputs supported	3.5mm Bluetooth
Audio streaming via bluetooth	A2DP AVRCP HFP HSP
Bluetooth version	3.0
Wireless connection	Bluetooth
Wireless range	9
USB	yes
Detachable cable	yes
Multi Point connection	no

Battery operated	yes
Battery life	15.0 h
Talk time	20.0 h
Charging via USB	yes
Power handling capacity	30.0 mW

Colour of product	Black Silver
Acoustic design	Closed
Attachment type	Headband
Category	Audiophile
Foldable	yes

Frequency range	20 - 20000
Diaphragm diameter	1.5 in
Driver technology	Dynamic
Driver size	1.57 in
Maximum input power	30.0 mW

Playback controls	yes
Buttons	Volume
NFC	yes
Carrying case	yes

JBL Synchros S400BT - Q&A

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JBL Synchros S400BT JBL - Editorial Reviews (5)

3.7

Based on 5 reviews

JBL Synchros S400BT JBL Syncros S400BT: Close to Syncros-nicity

Sound & Vision

Published: 13.03.2014

JBL Syncros S400BT: Close to Syncros-nicity

Ah, Bluetooth. The desire to cut the cord has led to a market flooded with a dozen new wireless headphone options in the last few months. The latest to enter the fray is JBL, with their Synchros S400BT: a touch sensor controlling, LED glowing, aptX encoding, Bluetooth 3.0 stereo over-ear headphone. With all those bells and whistles, I just had to give them a try. How would they measure up?

JBL Synchros S400BT JBL Synchros S400BT Review

PCMAG

Published: 28.03.2014

JBL Synchros S400BT Review

4.0

The JBL Synchros S400BT is a Bluetooth headphone pair that delivers absolutely thunderous bass in a comfortable design.

Phone Arena

Published: 09.08.2014

JBL Synchros S400BT Review

Audio aficionados know the name JBL, a company long known for its various audio electronics products – spanning from amplifiers all the way to loudspeakers. They’ve been in the business of making mobile audio accessories as well, like its diversified portfolio of wired and wireless headphones. In looking at its current selection, the JBL Synchros S400BT is undoubtedly one of the company’s higher-end offerings, since it features Bluetooth 3.0 with advanced aptX technology, NFC, and touch-sensitive controls – all for the price of $230. With all of the goodies in tow, it’ll be intriguing to find out how its audio quality stacks up...