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1. Mechanical volume limit;

2. It has overload protection, horn system protection, high temperature protection, input signal size protection, transformer protection and other functions;

3.5 groups of microphone input (front 3 and rear 2 groups); 4 groups of sound source signal input can be switched arbitrarily;

4. Recording output terminal capable of external recording;

5. The remote control music volume is added randomly, and the wired remote control device can be connected externally;

6. Rated power: 2 × 250W/8Ω； two × 400W/4Ω；

7. Frequency response: 20Hz-20KHz ± 3dB;

8. Total harmonic distortion: ≤ 0.15%;

9. Signal to noise ratio: > 90dB;

10. Music input sensitivity: 0.775v;

11. Nominal impedance: 8 Ω;

12. Power supply specification: AC 200v-220v 50-60Hz;

13. Standby power consumption: 25W;

14. Appearance dimension (W x H x D): 483 * 130 * 370;

15. Net weight: 12kg.