Circuit diagram

At this point is a minimal / simple power amplifier on behalf of boosting the audio level from low-power Computer sound cards before other audio sources driving tiny speakers like toys otherwise small transistor radios. The circuit pray set free around 2 watts to the same degree given away.  The parts are not significant and substitutions will commonly job.  The two 2.2 ohm resistors might live replaced with solitary 3.9 ohm resistor featuring in either emitter.