Our GuaranteeAll Yamaha Refurbsihed Product sold by World Wide Stereo is guaranteed to perform “as new” and is backed by a .Ace of SpaceGood on space and on bass. Packed with virtual 3D surround sound Clear Voice and Adaptive Low Volume technologies inside a footprint made for versatility. A wireless compact subwoofer wants to be heard but not seen – place it vertically or horizontally. Bluetooth and easy setup options make listening simple. Wall-mount for even more space-saving possibilities.FeaturesWireless subwoofer that you can place horizontally or vertically to fit in any spaceClear Voice for enhanced dialogue clarityAdaptive Low Volume for rich sound even at low volumesBluetooth streaming for your music and podcastsSimple setup with HDMI optical or aux connections