-AB32291_Ver1.0_Page 3
1. Open the amplifier package and make sure the product is intact (No missing
or damaged components and no deformation.
2. Please observe the connection schematics when connecting the amplifier
board. Use a nearby sound source, such as MP3 or CD player to have a trial.
This amplifier board can be deemed as qualified if you can hear the sound
corresponding to that sound source
3. It’s recommended to make sure the polarities of wires correct first and then
connect the wires to the board. After connecting the audio input and output
cables, turn down the output to the lowest and then power the board.
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