PIBD Amplifier

Miniature amplifier, built into a plug-in module, which achieves maximum power when connected to an 8-?loudspeaker and supplied with 15 V, any loudspeaker may be connected when using audio transformer P3180-LF, 8-16-? loudspeakers require no audio transformer, takes dynamic microphones
with an impedance of 50-250 ?, 10 kOhm potentiometer controls volume