*note : Stereo Amplifier I've tried this Circuit Amplifier and was resulting in very satisfactory . The sound that issued a very nice and smooth. It's just that there is little noise, but the noise will go away when a loud sound. And strange , sound effects can out by itself and by simply adding tone control. Minimum supply voltage is 5 volt , and maximum supply voltage is 18 volt . Maximum power output 2 X 10 watt with minimum impedance 4 Ohm. See this schematic Circuit below : This is schematic circuit and i design in simple circuit. Click to view Enlarge