Audio Power ICs – Texas Instruments LM380N, The LM380 is a power audio power amplifier for consumer applications. Gain is internally fixed at 34dB. A unique input stage allows inputs to be ground referenced. The output is automatically self-centering to one half the supply voltage. Applications include simple phonograph amplifiers, intercoms, line drivers, teaching machine outputs, alarms, ultrasonic drivers, TV sound systems, AM-FM radio, small servo drivers, power converters, etc. Texas Instruments LM380N 2W Audio Amplifier