Characteristic explanation：

• 3 group microphone inputs, 2 group AUX inputs, 2 group AUX outputs
• 100V, the 70V constant pressure output and 4-16 OMEGA decide the anti- output
• 5 unit LED the decibel meter, the red candle distorts the instruction
• Has the silent sound function to be advantageous for the insertion urgent broadcast
• Various input channels independent volume control, height note tuning
• Output short circuit protection and buzzing warning
• Starting time delay output, against big current surge
• Brings 5 districts
• The single plane is a set of complete small public broadcast system