TDA7297 amplifier board with terminal.2.0 dual-channel 15W + 15W, can be accessed 4-8 European 10-50W speakers Large body volume, wide range of applications Size: 50x50x42mm (length x width x height, without potentiometer handle), ultra-small size for any space Voltage: DC 9-15V, recommended DC voltage 12V, current 2A above;Power: 15W + 15W Output impedance: 4-8 ohms