You can dock devices in the OnBeat Rumble ($399), (or stream music wirelessly to it via Bluetooth. JBL

At this year's CES, JBL is showing a couple of new Lightning-equipped speaker docks, including its higher-end OnBeat Rumble, which will retail for $399 when it ships this spring.

JBL is calling the Rumble a "room-rattling loudspeaker" for the iPhone 5, iPad Mini, fourth-generation iPad, and other Lightning-equipped Apple mobile devices. The tabletop unit is rated at 50 watts of power and allegedly delivers "booming bass, thanks to an oversized, down-firing subwoofer."

JBL says the OnBeat Rumble uses Harman's TrueStream technology to "guarantee the highest-quality sound when streaming audio from an Apple product or another smartphone or tablet via Bluetooth connection."

The company also touts that the 4.5-inch (114mm) subwoofer as using the company's proprietary Slipstream port technology, which helps minimizes distortion, "so there is no unwanted boominess to the sound whether the music source is docked or streamed."

Needless to say, the speaker charges Apple Lightning products when they're docked.

I'll let you know how the Rumble --and the new OnBeat Mini ($149) -- sound as soon as I hear them. I suspect this speaker will sound much better.

The back of the Rumble with an iPad 4 in the Lightning-equipped dock. JBL