This amplifier is specifically designed for portable radio and recorders with a 4 ohms load. However, as it supports a supply voltage of up to 24 V, it can also be used in equipment powered by the network. Also considering that its minimum supply voltage is 3.6 V, it can be used in battery powered equipment and is supplied in a 9-pin SIL (Single Line) enclosure. Among the advantages offered by this integrated we highlight separate preamplifier and power amplifier, internal thermal protection, high input impedance (greater than 100 k ohms Low resting current (14 mA at 12 V tip), limitation for RF noise We give below a table with the powers as a function of the supply voltage for a total distortion of 10% and the diagram.