厂家直供消防广播功率放大器KT9221（消防功放机）
1,数字电位器调整无定位，连续可调和预置音量
2,有输出过载、短路、过压保护、过温保护
3,功放输出有录音
4,功率输出:150W/300W/500W
5,尺寸3U
Power Amplifier
1,Using digital potentiometer; the volume can be adjusted continuously, and can be preset.
2,Pretects and gives an alarm when output overload, short circuit, overvoltage , overheat.
3,Power output : 150W/300W/500W.