RUMBLE BY NAME AND NATURE - BUILT-IN SUBWOOFER The JBL OnBeat Rumble is a dock with a difference. Tucked away inside the sleek cabinet is a dedicated 114mm, downward firing subwoofer unit with its own 28 watt amplifier. Working in conjunction with this is JBL"s proprietary Slipstream port technology. Unlike many docks, this gives the OnBeat Rumble a rich, powerful sound that"s not out of its depth in larger rooms. Additional stereo speakers provide a crisp, broad-staged sound that"s every bit as exciting as you"d expect from a JBL product. APPLE LIGHTNING CONNECTOR With its built-in Apple Lightning dock, the OnBeat Rumble is ideal for use with an Apple iPhone 5, iPad Mini or the latest iPads and iPods. The flip-up dock is substantial enough to support even an iPad Retina (4th generation) and yet tucks neatly away when not in use. This dock not only lets you play music from your Apple device but also charges it, too. BLUETOOTH COMPATIBLITY Whether you use Apple devices or not, Bluetooth connectivity gives you wireless music streaming from a huge range of devices including smartphones, tablets, laptops and PCs. Stream your stored music or take advantage of music services such as Spotify or last.fm. Unique to the JBL OnBeat Rumble is Harman"s TrueStream. This enhances Bluetooth streaming quality, whatever the source used. Should you prefer, the OnBeat Rumble also comes with a 3.5mm analogue input at the rear for all sources with a headphone output. STANDOUT STYLING With its wrap-around grille, smooth edges and an integral stand, the OnBeat Rumble stands out from the more boring docks around. As you"d expect from JBL it"s also solidly built and well finished.