8 Pin DIP 0.5 Watt IC Audio Amplifier
By National Semiconductor (LM386N-3)
MCM Part #LM386N-3
The LM 386 is a power amplifier designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200.