Line Array, PRO Audio, Sound System manufacturer / supplier in China, offering Ks28 Dual 18 Inch Bass Subwoofer Subwoofer 4000W Peak Full Range Passive Subwoofer Professional PA Subwoofer for DJ Concert Live Sound and Outdoor Events, Domc 6210 2-Channel Hi-Fi Stereo Power Amplifier High Fidelity Low Distortion >100db Snr for Home Theater Audio System, Domc 6208 Two-Channel Professional Audio Power Amplifier 0db Flat Frequency Response 18kg Heavy-Duty Amplifier for Stage KTV Conference and so on.