1.4 microphone inputs; 4-way line sound source input, which can be switched arbitrarily;

2. With SD card / USB input port, direct selection and playback; It can be connected to Bluetooth and also has infrared remote control function; MP3 player is preferred;

3. Music adjustment: high bass, left-right balance and total volume;

4. Microphone adjustment: each channel is equipped with gain, echo, delay, high bass and reverberation depth;

5. Power amplifier protection: startup protection, short circuit, DC and overheating protection devices;

6. Rated power: 2 × 200W/8Ω； two × 300W/4Ω；

7. Input sensitivity (microphone): 5-100mv / 1kohm;

8. Input sensitivity (line): 250Mv / 47Kohm;

9. Power supply: ac210v-230v / 50 ~ Hz;

10. Output impedance: 4-16ohm;

11. Panel material: aluminum alloy;

12. Size: 130 * 430 * 320mm;

13. Cooling: variable speed fan.