Here’s a circuit of 7 Watt audio amplifier that is very simple and very easy to build. This amplifier is built using TBA810 as the main component with the support of a few passive components. This circuit can work well, kits and components of this circuit can be found easily at an electronics store in your area.
The TBA810 chip is a class B amplifier with high efficiency and very low harmonic distortion . The input voltage range of the TBA810 is from 4 volts to 20 volts . Main features of the TBA810 circuit are : low noise , few external components required , polarity inversion protection , high supply voltage rejection ( 40dB min.) . TBA810 monolithic audio amplifier can be used in many audio applications for car radios ,other audio devices or portable applications .