Specifications active line array speakers

USB, SD,Karaoke; Digital power amplifier

Intelligence recharge;apply for both AC

active line array speakers ? Specification: ? Basic functions:?USB /SD/MMC card reader function,? wired microphone/one guitar input,two? MIC input ,FM?
Power Switch? Protection?
Power Supply:?AC 110V ~ 220V (50-60Hz), built-in DC 12V/12AH a battery, external DC 12V power input
Frequency range:?VHF 210-270MHZ one for two
Frequency response:?50Hz-18KHz ± 3dB
The microphone effect :25-50 meters
Wireless microphone can choose to use a hand-held or headset with microphone priority, the music volume automatically open microphone attenuation 75% in order to support the people speak a little background music
Rated? Power:?80W P.M.P.O:160W
Speaker:??8'' Horn Tweeter ,70 megnetic?
Sensitivity:?10dBμV (S / N the more than 60dB)
Oscillation mode: quartz oscillating locked ± 0.005%