The device also includes a pair of detachable wireless speakers you can place elsewhere in a room for more immersive sound. They'll run for around 10 hours of playback on a single charge, JBL says, and you can recharge by attaching them to the soundbar again.
The entire system offers 820 watts of power and includes a 10-inch powered subwoofer to handle low-end tones. There's also a 4K Dolby Vision video input, along with built-in Chromecast and AirPlay 2 streaming support and Bluetooth connectivity. The JBL Bar 9.1 will go on sale in the spring for $1,000.
Update 2:01PM ET: This has been updated to reflected revised pricing info from JBL. The JBL Bar 9.1 will be sold for $1,000 starting this spring.