Amplificatore segnale sonoro 7 bande lega di alluminio doppio canale amplificatore auricolare DC5V-12V
Model Number: Sound Equalizer. 1 X 7 Band Equalizer. Adapting earphones: The NE5532 constitutes the balanced earphone amplifier of the 47 earphone driver circuit, which can easily drive various earphones with adjustable height.