Stripped down of all its niceties, the JBL Synchros S400BT are a great set of headphones. The sound is full and it hits all the marks no matter what kind of music you toss at it. Comfort was never an issue and the battery life seemed to last longer than it should have.

Magnificent design and sound; Long battery-life; Comfortable

Spotty Bluetooth signal strength; Price is a bit high

Expected to ship in mid-March, JBL's Synchros S400BT ($300) is the audio company's latest set of Bluetooth wireless headphones. Shipping along with a carrying case, audio cable, and USB charging cable, the earcups straddle the...

JBL’s wireless On-Ears Live 400BT are compact and portable on the one hand, but at the same time offer many technical refinements. This includes the integration of voice services, support for multipoint connections, a Talkthru and Ambient Aware function, as well as an app connection.

Portable

My grandsons happy with his Christmas present...easy to use

A patchy performance from the JBLs: the fit isn't quite right and neither is the sound The JBL's aren't bad headphones, but the bass needs taming and those operational and design issues need ironing out too. A bit hit-and-miss, then.

Solid build; Weighty bass; Exciting sound

Loose fitting; unintuitive touch-controls; Overbearing bass; Lack of detail and refinement

One of the most influential letters of the alphabet and sound JBL are at it again. As one of the pure quality sounds in headphones, speakers, etc in the game, JBL blesses you with a beautiful option of listening to your favorite music via Bluetooth.

Spring has finally sprung in New York, and today I'm checking out the new JBL Live 400BT – an on-ear headphone retailing for $99. Voice-assist ready for Alexa and Google Assistant, and offering Ambient Aware and Talkthru modes, the Live 400BT talks a big talk. But does it walk the walk

The JBL 400BT are decent, mixed-usage, on-ear headphones with a well-balanced and customizable sound. They have decent audio reproducti...