Broadcast Constant Voltage Power Amplifier Inputs: 2 microphone inputs, 1 RCA lotus input, USB, Bluetooth playback Outputs: 1 RCA lotus loop output, 4-16Ω and 100V dual-zone output Effect Adjustment: Treble and bass adjustment, master volume control, independent volume control for two microphone inputs, independent volume control for two zone outputs Output Power: 80W Frequency Response: 60-18kHz Power Supply Voltage: 220V 50Hz Weight: 3kg Dimensions: 30x22.5x7.5cm