2.4GHz 50-300W power amplifier 1.ISO 9001:2000, ... PC,central control,USB system.5.Five line wired MIC input with 6V power supply6.Certificate:ISO 9001: ... .Three line audio input,A line 2.4G wireless MIC input8.A line advanced audio input, echo, volume ... Application: classroom,multimedia room,conference,multifunction hall.12.Selectable MIC:1090,1060.More Specification: selection guide:assembleSpace(SQM) ...