digital PA amplifier, audio amplifier

1.MP3 digital PA amplifier;
2.USB/SD/MMC card input;
3.MP3 VFD digital frequency spectrum display;
4.Main channel bass and treble tone adjust;
5.Dual microphones and 1 AUX input in front panel and rear panel;
6.Fire fighting Alarm system.

Technical specifications:
Power supply: 220V-240V AC 50Hz
Distortion: 1% at 1KHz, 1/3 power rated
Input Mic1-2: 60dBV(1.0mV), 600O, balanced, phone jack
Input AUX 1: 20dBV(100mV), 10kO, unbalanced, pin jack RCA
Tone control: bass:+/-10dB at 100Hz
Tone control: treble:+/-10dB at 10KHz
Frequency response: 50Hz-20KHz,+/-3dB
12V DC input: 40W
220V AC input: 60W
S/N ratio: 80dB
Output 4O: 18V
Output 8O: 22V
Output 16O: 32V
Output 100V: 330O
Output 70V: 170O
digital PA amplifier, audio amplifier