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The main technical parameters:
 
1. Audio power: 65 w
 
2. The frequency response: the 250-10 KHZ
 
3. The voice ratio: > 88 db
 
4. The MIC input: 100 mv or less
 
5. General audio distortion: < 1%
 
6. An SD card or usb flash drive
 
Section 7. Choose restudy
 
8. FM band radio remote control
 
9. Can put tape,
 
10. Can be an external microphone amplifier