An easy to make A+AB audio amp. The amplification is given by the two resistor [(330k / 110k) + 1] and then its droped by 1.2:1 between op amp and transistors. The op amp cant give much current so the transistors boost it. The transistors need to be matched pairs eg. TIP31/41 and TIP32/42. This is better suited as a small booster or pre-amp rather than a standalone audio amp.
