1 、 this speaker is a multifunctional portable sound amplifying system with built-in batteries, AC and DC dual purpose, pure sound, perfect, compact structure, durable, simple operation and easy to use.
2, built-in maintenance free rechargeable battery, full of electricity, can be used for 4 hours (voice amplification), or you can use AC power.
3 、 TDA7377 high fidelity power amplifier IC;
4, low static power consumption, allowing the machine to play longer;
5 、 battery charging protection, undervoltage protection, fully protect the battery;
6, Bluetooth connection player;
7, USB/ SD card input, support MP3/WMA two audio formats;
8 、 wired microphone input;
9, wireless microphone input (see packaging accessories);
Output impedance ----------4 ou
Power consumption ----------20-100W
Input impedance ----------47K ou
Frequency response ----------40Hz-20KHz
The signal-to-noise ratio is greater than or equal to - 85dB
Limited to 220V voltage usage. The first time to use the battery should be machine batteries run out, the sound distortion in the state, on behalf of electricity has been exhausted, should immediately charge; the first charging time is not less than 12 hours after the charging time of not less than 9 hours. When not in use, the battery should be full of electricity. If it is not in use, it should be recharged every 3 months.