http://www.hlaudio.net/product_show.php?id=181&&dlm=2passive speaker box

passive wooden subwoofershttp://www.hlaudio.net/product_show.php?id=133&&dlm=33

* Play: USB+SD card + two VHF microphone* With Treble&Bass control,Mic.Echo& Vol.control, Music volume control, Mic line input* Storage battery (12V 10AH) can work 5 hours

portable PA system http://www.hlaudio.net/product_show.php?id=197&&dlm=  

RMX series amplifier http://www.hlaudio.net/product_show.php?id=66&&dlm=

UHF wireless microphonehttp://www.hlaudio.net/product_show.php?id=108&&dlm=

WIRED MICROPHONE HL-30Shttp://www.hlaudio.net/product_show.php?id=116&&dlm=

WIRED MICROPHONE HL-30Shttp://www.hlaudio.net/product_show.php?id=116&&dlm=

MACK-15A active acoustic systems http://www.hlaudio.net/product_show.php?id=28&&dlm=2