This is a very simple and low cost circuit of dual audio amplifier based on IC KA2211 from Samsung. With single chip, this circuit will deliver up to 5.8W on each output channel.
KA2211 is a dual audio power amplifier for consumer application. It is designed for high power, low dissipation dan low noise. Is also contains various of protectors and suitable for car audio power amplifier with high performance.
Read more about this KA2211 amplifier circuit