Powers 4 loudspeakers - 50 radio station pre-set memory - 110V/220V power switch * USB flash memory reader - Volume, balance, treble, bass & gain main channel control - AM/FM antennas included * AM/FM radio with digital display - Volume, bass, treble, echo control for microphones * Auto scan function - 2microphone input jacks * Remote control included - 2 RCA input source