The TDA2040 is not a common IC these days, but if you find one you can build this high quality audio amplifier. For a 20 V power source and a 8 ohm load output power is 14 W For 18 a V source and a 4 ohm load the maximum power of 19.4 W is achieved. The IC must be mounted on a large heatsink.
8W Amplifier Using the TDA2040
