Line Array, Subwoofer, Digital Amplifier manufacturer / supplier in China, offering Sinbosen 4 Channel 10000W Sound Subwoofer Professional Audio Fp22000q High Power Amplifier, 21 Inch Neodymium Magnet Professional Speaker Audio Subwoofer, Ka212 Neodymium Dual 12 Inch Line Array Speakers Active Professional Outdoor Speaker System and so on.