. The HTB400 delivers powerful bass with dual built-in subwoofers integrated into the cabinet. The stylish one-bar design is simplified to the greatest possible extent to match TVs & blends into any interior Key Product Info. Easy yet dynamic home cinema experience Powerful sound from compact speaker box Built-in subwoofer enhances bass power Universal design to match your TV Product Features Easy yet dynamic home cinema experience The HTB400 is a single bar full of audio features to enhance cinema experience. Dual built-in subwoofers produce deep booming bass for action scenes. Virtual Surround function & Cinema Mode ramp up the realism. Powerful sound from compact speaker box The front employs a full range 4.5 x 10cm speaker unit for a total output of 160W including the built-in subwoofers. As Panasonic's first soundbar with a neodymium magnet it achieves powerful sound in a miniaturized unit. Built-in subwoofer enhances bass power Speaker unit & built-in subwoofer are combined in a single bar. Two bass reflex ports accommodate the subwoofer so you can enjoy clear powerful bass. Universal design to match your TVThe minimal design of the soundbar with ultimate simplicity blends into the surrounding space matching the TV design. It accentuates the images & sounds for the optimal entertainment experience.