Different kinds of microphones Inspection:
Hand-held microphone
Instrument microphone
Clip microphone
Headset microphone
Children microphone
Interface microphone
Wireless microphone
Some common factors for microphone quality control:
Appearance
Quantity check
Measurement(weight& size&thickness）
Function test
3M tape test for Logo
Pull test for cord
Packing check
Carton dropping test
Frequency test
Sensitivity test
Power test
