Product features:
Output short circuit protection
Miniature size, easy to install
Differential input (need to cut off the designated part of the circuit)

TIP: 36dB gain good and bad!
Amplifier gain using 36dB benefits: because some audio equipment source signal is too weak, the sound amplified by 36dB amplifier.
Amplification with 36dB amplifier will be very loud, with the market 20dB amplifier amplification sound will be very
small. For example, mobile phone output audio signal is weaker than the computer audio signal, with 36dB amplifier amplification
the sound will be very big. If you connect the computer audio signal, with 36dB amplifier amplification sound is too
large, the sound and distortion is difficult to hear, you should lower the volume of the computer, if the computer is not convenient to adjust, you can use the amplifier board to adjust the volume.
If the computer is not convenient to adjust, you can reduce the volume in the amplifier board input series resistance (amplifier board input resistor is 1K, using the resistor division).
resistor is 1K, the use of resistor voltage divider to change the volume of the amplifier, so that the amplifier will not appear amplification
saturation distortion), is to amplify the sound is not distorted, not difficult to hear.

Amplifier gain using 36dB bad: If the audio equipment in the mute (no sound)
When there is a weak noise signal, through the 36dB amplifier will put the noise is very large, so the
Some customers say why the amplifier does not play the sound have a lot of noise (because the noise is all
from the input signal source, disconnect the input audio cable of the amplifier board inside the speaker is no
a little noise). Desktop computer noise is much louder than laptop noise.
It is generally recommended that customers test the use of laptop computers to provide audio sources.

Precautions
1, the amplifier board powered on, the hand can not touch the board component pins, because the human body interferes with the signal interference Interference with the timing of the digital amplifier, resulting in damage to the chip, as well as the human body with a strong electrostatic case direct Components, the basic knowledge of the hazards of human static electricity we still need to popularise.
2, the power supply voltage should be stable, try to use switching power supply and battery power supply, if the power supply ripple is too If the power supply ripple is too serious, you can add capacitor filtering. Battery power supply without adding capacitor filtering. Power supply should never can exceed the operating voltage of the board, or burn the chip, digital amplifier special petite, not analogue amplifier, working in a completely different way. Digital amplifier is particularly delicate, not analogue amplifier, the way of work is completely different.
3, 8 ohm speakers basically do not need to add a heat sink, less than 8 ohm speakers, if the chip temperature is higher than 60 degrees, due to the immediate stop working. 60 degrees, due to immediately stop working, plus heat sink fan heat, otherwise the temperature rises will immediately burn off the Chip.

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