厂家直供CD式消防广播主机（前置放大器）   
1,CD/MP3播放器
2,USB接口可配接U盘、读卡器播放音乐
3,CD和MP3播放自动或手动转换
4,具有曲目显示屏
5,自供稳压电源

6,尺寸2U

CD Player
1,CD/MP3 player .
2, USB interface can be equipped with U disk, card reader to play music.
3,CD and MP3 player automatically or manually convert.
4, Repertoire display screen.
5, Self-regulated power supply