1. Built-in MP3 player, a microphone input, a road AUX input;

2. Constant voltage 70V to 100V output and 4-16 ohm resistance output;

3. Output short circuit protectionProtection and alarm, overheating and saturation distortion of the alarm;

4. Wide frequency response, distortion is small, power is great;

5. Suitable for stores, schools and other entertainment occasions.