★ 2 channels AUX input, 3 channels MIC input, each channel is individual volume adjustment. ★ The first channel MIC hasing tiptop priority, convenient to insert broadcast on the emergency. ★ 1 channel emergency signal input port (EMC) will automatic process rest sound signals, priority emergency signals, furthermore connect external different kinds of jow, alarm sound and music signals. ★ Excellent strong wind and cold technique can ensure longtime and steady working under high temperature condition. ★ Complete overflow、overload、overvoltage、short circuit and high temperature of protection function. ★ Excellent 2U casing design, according with installation of standard cabinet. ★ 5 cells LED power level display and all kinds of protection indicator light. ★ Holding manifold powers to select from 80W~800W. ★ Collocating the record signal output interface, according to the facts to record signals and handing general control function, convenient to close broadcast, furthermore the amplifiers can longtime and steady work yet. ★ As preposing to use individually, connecting more power of simple amplifiers.