JBL

Synchros S300a

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The next big thing in sound.

$39.99 - $149.95
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Big on sound – precise in design

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.

Item# SYNCHRO 300

General Specifications

Type On-ear headphones
Maximum SPL 115dB @ 30mW
Rated Power Input 30mW

Audio Specifications

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

Speaker Specifications

Driver Premium 40mm

Dimensions

Height (mm) 168
Width (mm) 125
Depth (mm) 74

Control and Connection Specifications

Connector 3.5mm jack
Click here for a complete list of all specs for this product

Spec Sheet (EN)

English 1 MB
  • 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

Manuals & Downloads

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

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1 Year

Note: the Warranty Card provided with your JBL product contains the full terms and conditions of your warranty.

Unless a different warranty period is stated in the Warranty Card provided with your JBL product, JBL warrants for a period of 1 year (5 years for any non-powered speakers) from the date of retail purchase by the original end-use purchaser, that this product, when delivered to you in new condition, in original packaging, from a JBL authorized reseller and used in normal conditions, is free from any defects in manufacturing, materials and workmanship. Refer to the Warranty Card provided with your JBL product for specific details including what is not covered along with other terms and conditions.

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Synchros S300a is rated 4.3 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
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Are there any restrictions if I'am going to use the S300a in combination with an iphone 6s?

Asked by: pkirch
Because the S300a comes with a standard 3.5 jack there should be no restrictions when using the iPhone 6s. They are also compatible with all IOS devices as well.
Answered by: Karissa
Date published: 2016-02-10

Greetings,I have two inquiries.1)Is your Synchros S300a's 3-button remote only compatible w/ Android devices, or is it "universal?"And of such,2)Is the S300i only iOS compatible?Amazon.com lists the S300a as "universal."Looking forward to purchasing!

Asked by: iMichael
The Synchros S300a is compatible with all smart phones, so it is technically a universal headphone. However, the Synchros S300i is only compatible with apple devices only.
Answered by: Karissa
Date published: 2016-07-09
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