Yamaha Audio SW 300 Subwoofer Piano Black COLLECTION_AIR CONDITIONERS Bluetooth (USB is for Service Net Weight with Stand Bluetooth (USB is for Service only FOR A LIFETIMELISTENING CARE: Blending a passion for music with a respect for hearing health—ensuring a lifetime of listening enjoyment PWM digital drive high efficiency amplifier and dual feedback circuit New Twisted Flare Port contributes to clear and tight bass Advanced YST II (Yamaha Active Servo Technology II) 25 cm (10”) cone woofer with square wire voice coil Beautiful design will match a wide range of speakers and interiors Front control panel for easy control System control and Auto standby A subwoofer that will match a wide range of speakers and interiors