... quality and good price!2.loudspeaker, power amplifier and line array pa system are our strong points3.selling to 100 ... .Most are CE and RoHS certified.Loudspeaker, power amplifier, line array system and are our main professional audio products. Our ... include also Karaoke system, switching power amplifier, digital power amplifier, mixing console, microphone, flight cases, audio cable, speaker cable and ...