Input voltage: DC = 15V(the suite without rectifier， theDC power supply voltage must be recommended， 12V)Output power: Po = 10W (RL=4��)Output impedance: 4 - 8��Size:5.5x5x2.6cmList:6xResistance5xElectrolytic capacitor1xPotentiometer2xTerminal block2xOrdinary capacitor2xDiode1xIntegrated circuit1xHeat sink with screw1xPCB board1xPinPackage include:1 x amplifier board