professional power PA amplifier

*Build in MP3 player
*DC 12V battery automatically charge fuction
*Nobler aluminous panel and plastic knob
*Main channel bass and treble tone adjust
*Record audio output

Distortion: 1% at 1 KHz,1/3 power rated
Input Mic1-4: 60dBV(1.0mV),600O,balanced,phone jack
Input AUX: 20dBV(100mV),10KO,unbalanced,pin jack RCA
Tone control: bass:+/-10dB at 100Hz
Tone control: treble:+/-10dB at 10KHz
Frequency response: 50Hz-20KHz,+/-3dB
professional power PA amplifier