Line Array, Subwoofer, Digital Amplifier manufacturer / supplier in China, offering Sinbosen PRO Audio High Power 3000W K4-1400 PA System 1u 4 Channels Sound Digital Power Amplifier, Sinbosen Professional Stereo Amplifier Ds-20q Best Power AMPS for Live Sound, Ds-14K 2 Channel Power Amplifier Module 4000 Watt for Subwoofer and so on.