This is simple portable audio amplifier circuit. This circuit built based on IC TEA2025 which is a monolithic integrated audio amplifier in a 16-pin plastic dual in line package manufactured by UTC . Circuit has an Internal Thermal Protector. It is designed for portable cassette players and radios. You can also use it as your PC Audio Amplifier.
Here for stereo audio input/output
and here for mono audio input/output (bridge)
Stereo per channel
VCC=9V;RL=4 ohm/3W
VCC=9V;RL=8 ohm/2W
Bridge Application
VCC=9V;RL=8 ohm/5W
VCC=9V;RL=4 ohm/8W
Supply Voltage min = DC3v @ 500mA
Supply Voltage max = DC12v @ 500mA
Supply Voltage recommended = DC9v @500mA
Download the schematic diagram in PDF format HERE
what is the voltage value of capacitor and what is the power of resister {as example 1 watt or different}
you can use 16v capacitor and 1/4 watt or 1/2 watt resistor