Amplifier Ne5532/a828 Preamp Preamplifier Volume Tone Control Fshed Pre Amp Board for Home Theater Speaker DIY

When the sound is low, the preamplifier is used for the audio signal input to the power amplifier. It can provide an amplification of about 10, which is suitable for all small signal audio output devices.It can also be used as a simple headphone amplifier. Input and output signals can use 3,5AUX interface design (IN signal input, OUT signal output).Use the volume potentiometer design with a power switch