2/4 groups mixing console. Balance input for microphone, and equip high quality +48V phantom power for each input channel. High quality and low noise input for microphone. Low noise pre-amplifier, with strong antijam ability. Equip slap-up signal insert point(for connecting signal processor). 3 bands EQ of mid-frequency sweep. British style. groups AUX sends, could choose before slider (return) or behind slider (connect processor).