1. When using the amplifier, you should avoid the microphone facing the horn, and the volume adjustment is appropriate and clear. This can avoid distortion and feedback whistling.
2. Do not pull and drag the microphone cable during use. Otherwise, it is easy to cause poor contact between the wires.
3. The main battery should not be over-charged and discharged for a long time. When the low battery is indicated, it should be charged in time. When it is not used, it should be noted that one or two months should be charged.
4. Handle gently during use.