JBL

Synchros S300 NBA Edition - Celtics

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Stylish Synchros on-ear stereo headphone

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The new shape of sound

Revolutionize your portable listening 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 6 colors, the S300 is compatible with both iOS and other Smartphones.

Item# SYNCHROS S300 BOS

General Specifications

Type On-Ear Headphones

Audio Specifications

Frequency Response 10Hz – 22kHz
Maximum Input Power 30mW

Speaker Specifications

Driver 40mm

Control and Connection Specifications

Connector 3.5mm jack
  • 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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Synchros S300 NBA Edition - Celtics is rated 4.3 out of 5 by 3.
Rated 5 out of 5 by from Awesome bass and sound! I probably wouldn't have bought them had they not been on sale, but I sure am glad that they were. They are well made and sound simply great, plus I am a Celtics fan. If these headphones sound this good I can only imagine what other JBLs must be like. I am extremely satisfied.
Date published: 2018-04-11
Rated 4 out of 5 by from Great sound quality and comfortable! Was very pleased with the way they fit on my head and the great sound quality!
Date published: 2018-07-21
Rated 4 out of 5 by from Overall positive experience I've been using these headphones for about a month. they're great audio, mostly comfortable and I love the Celtic green! The only thing I don't love about them is that the headphones are kind of small, they don't folly encompass the ears. Also, the trade off with them not having Bluetooth, is that you never have to charge them. The other thing I didn't realize is that there is no microphone for phone calls, but that's not the biggest issue.
Date published: 2018-04-21
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