Amplifier considerations

1. the loudspeaker should be avoided when using microphone on the speaker, volume control right is clear, so as to avoid distortion and feedback howling.

2. use do not pull, twist the microphone cord, or prone to poor wire contact between lines.

3. host not long after charging after discharging the battery, low battery tips should be promptly charged and the winter inactive should be aware of a zhiliangyue on a single charge.