Power Amplifier, Professional Microphone, Audio Processor manufacturer / supplier in China, offering Jt-Sub Outdoor Stage 3 × 18" Subwoofer Neodymium Speaker, Sinbosen D4-3000 Digital 2 Ohms Stable 4 Channels 3000W 1u Power Amplifier Professional Audio, DSP 2 Ohms Stable D4-3000 Professional 4 Channnels 6500W DSP 1u Digital Power Amplifier Audio Sound and so on.